Memory card writing slow: is this normal? - 8125, K-JAM, P4300, MDA Vario General

I have a question about MiniSD card writing slow:
I formated my card recently. now I'm trying to put data on it (about 700mb)
and it is taking longer than 3 hours and counting. I have written about 300mb so far.
Is this normal?
Is there software that can format the card in a way that it would write faster?/ or is this normal?

S.V.I said:
I have a question about MiniSD card writing slow:
I formated my card recently. now I'm trying to put data on it (about 700mb)
and it is taking longer than 3 hours and counting. I have written about 300mb so far.
Is this normal?
Click to expand...
Click to collapse
Yes.
Is there software that can format the card in a way that it would write faster?/ or is this normal?
Click to expand...
Click to collapse
No. Use an SD Card reader to load your card, then put it in the phone. That is the only fast way to do it. They are cheap (usually around $10 US), and totally worth it if, like me, you use your phone as a media player.
You are effectively asking the phone to read the file you send, copy it, then paste it into the SD Card. There is NO direct throughput, regardless of logic. Sorry to bear the bad news.

i was using the latest version of WM5storage.
formated the card with XP. then i tried a warez program to format it again. Pocket mechanic could not format it by the way.
anyway, just wanted to see if this was a usual thing. The card has pretty much become part of my phone; I lost the adapter that comes with it. I mostly use it to store cab files and photos in between flashing.
The main thing I noticed is that programs dont behave as well if put on storage card. I thought if there is a way to format it propperly, they might?
Thanx for your reply. glad to know i didnt kill my ca with XP.

Related

2gb SD card becoming corrupt

I used my Qtek 9100 with a PQI 512mb miniSD for a good few weeks and it worked flawlessly. I had another unbranded 2gb miniSD card and decided to copy everything on to that and use it so I'd have more space for music. To cut a long story short, this worked fine for a few days then I started noticing WMPlayer acting up. I checked the card and loads of files seemed to be corrupt. After playing around with it for a while I eventually gave up and decided it must be a duff card.
So, I bought a 2gb PQI miniSD which I had read good reviews off. However, I'm having the same issue. I've tried everything I can think of 1) hard resets, 2) soft resets 3) re-installing apps 4) formatting in a couple of different PCs with a couple of different card readers 5) formatting from the StorageTools on the phone 6) formatting using WM5torage.
I can install apps and they seem to be okay, but then when I try and run them I get errors and when I look at the card its because of corrupt files.
I have no idea what is going on and I'm at the end of my tether.
I'm using the latest Qtek 9100 ROM from their website. Is this perhaps a bug in the ROM? Would I be better with another ROM? Which one? Will this still leave my 'phone SIM unlocked if I use a non-standard ROM?
HELP? Please?
Hey,
I do hope this is within this topic!
I've got aLmost the same problem, except I have some files just disapear on my 2GB mini, and some stay!
Lost a GIG of music, and most of my WORD docs, [60MB] and it left me 2MBs after removing Skype!
Real WEIRD!
Ive got a 8125 and stuff on the SD card just disappears after I remove an app!
Since this has happed more than 3 times and the 2GB mini tested OK, whats up with the device!
Is it the connections in the device to the SD card, or what?
Thanks for XDA-developers!
I have a 2gb card in my Qtek 9100. I've had it for about 2 weeks, and I got the card the day after I got the 9100. Sofar I haven't noticed any missing files. It's a 2gb Sandisk
I just thought to add this. Do you have the enhanced performance option in RegistryWizard enabled, or have you made the registry change to enable caching of the file system?
I was noticing that my recent programs on the start menu were being lost on occasion during a soft reset. I disabled that "enhanced performance" (caching) and that problem has disappeared. It makes sense that it would cause data loss or corruption, since data is being cached, if the cache doesn't write out before you reset, you loose everything in cache. I didn't notice any real world performance increase, so I will just leave that disabled.
If you have that setting enabled, and soft reset often, then that might explain the data loss/corruption
Success!
Well, I got hold of CnetX Flash Format program and this seems to have done the trick. I installed it and tried formatting the 2gb card as FAT32 - this gave the same problems I had before.
Formatted it as Fat 16 with 32k Cluster and lo and behold its working like a dream. Copied all my stuff from 512Mb card to it and now I'm syncing all my music over.
Fingers crossed it stays this way!
Scrub that......
.....just failed syncing my music over. Managed to get 950Mb of stuff on the card and then it started doing exactly what it was doing before. Hmmm....i'm really stuck now.
Howdy,
Well now today all my stuff on the care is gone POOF excect one little word file and a few omaclock things and a few folders!
All music is gone but the music folder is there WOW!
I already reformatted a few weeks ago to Fat 32 form the other one!
Hey d0ug,
I just thought to add this. Do you have the enhanced performance option in RegistryWizard enabled, or have you made the registry change to enable caching of the file system?
Click to expand...
Click to collapse
I dumber the a bucket of rocks, so where is th RegistryWisard enabled or disabled at if your talking to me?
Thanks and sorry for the dumby thing?
madefree said:
Howdy,
Well now today all my stuff on the care is gone POOF excect one little word file and a few omaclock things and a few folders!
All music is gone but the music folder is there WOW!
I already reformatted a few weeks ago to Fat 32 form the other one!
Hey d0ug,
I dumber the a bucket of rocks, so where is th RegistryWisard enabled or disabled at if your talking to me?
Thanks and sorry for the dumby thing?
Click to expand...
Click to collapse
You can get RegistryWizard here http://forum.xda-developers.com/showthread.php?t=255225
Hey d0ug,
Thanks for the link, and dnloaded it but I really know why, or want for?
Ok whats this for, the storage card or what?
Thanks for your valuable time, and really sorry for the extra stupid questions, as this device in not my first device but I didn't have any problems with the X50 so I didn't have to learn to work on it!
Hey scotjames
you said
.....just failed syncing my music over. Managed to get 950Mb of stuff on the card and then it started doing exactly what it was doing before. Hmmm....i'm really stuck now.
Click to expand...
Click to collapse
Yep I moved 1 + GBs music into a "music" folder again!
Installed a app from xda, here called omanclockscaller.exe or something like that and set the overclock (speed of the processor) to 240 and the underclock to 150 (which was stated to work on another 8125)
and my device FROZE to the max couldn't soft reset or nothing so I had to do the HARD reset!
Looked in the SD card saw the folder "music" and NOTHING in it, just blank!
All subfiles were gone, POOF!
When to the main area of the SD card and ticked on a Mp3 file that was sitting there and it said player said "file stopped." 70%
Went to another MP3 file, tapped, and it said blah, blah "end of file" and would not play!
SO everything on the SD card, cept dah empty folders are either
1. corrupted
OR
2. GONE bye bye!
So NOW since the 8125 might not be the "slowest" brick on the block, and wont run, Skype unless its "overclocked," and I can't go thru another 50 some pages on xda to find the "fix" for dah SD wiping weirdness, and the overclocking tricks of the techs, I guess I get to go to Cingular, exchange dah phone (as it ain't no good as a PDA, but a great heavy phone) and than sell the NEW one on ebay for 350 with the New 2200MHz extended battery, and someone who is more techey than I can enjoy tweaking the thing!
Ive done 5 full Hard resets and have had to redo most everything, 5 times, settings etc, and its getting real time consuming, to state the least!
So since I got this pos on ebey and it has a 2yr. warrantee I guess its getting ready to get gone!
Hope someone like d0ug can help you out, really!
Later!
What brands are the Memory Cards? Where did you buy them from? Is it just in the Wizard that the card is being corrupt or does it work flawlessly in a memory card reader? Cause from what I've read it sounds like PEBKAC.
Card brand
My first card was unbranded so not overly surprised I had problems. This one is PQI but I think perhaps its because PQI cards are MLC (multi layer construction). Apparently Sandisk are SLC (single layer construction) and they should work okay.
I might just have to fork out more money and see.
The card works perfectly in my PC with card reader.
Excuse the ignorance but what is PEBKAC (or should I not ask!)?
scotjames said:
My first card was unbranded so not overly surprised I had problems. This one is PQI but I think perhaps its because PQI cards are MLC (multi layer construction). Apparently Sandisk are SLC (single layer construction) and they should work okay.
I might just have to fork out more money and see.
The card works perfectly in my PC with card reader.
Excuse the ignorance but what is PEBKAC (or should I not ask!)?
Click to expand...
Click to collapse
Ah the reference to PEBKAC was more about the other guy. I think you've just got unlucky with the memory cards.
Card brand
Does the MLC/SLC thing sound viable? Has anybody got experience of using Sandisk 2Gb cards with the Wizard?
Hey scottjames,
I don't know if this helps as I was using Winamp files and wasn't using Win Media on my PC so that may be why the files got corrupt or just disapeared when I went in again and tried to play them!
So I diched Winamp and am using the gates special and so far so good!
I don't know if that may help but hope so!
Cingular is going to exchange my phone for too many other reasons!
Have a good one, and thanks everyone here!
scotjames said:
Does the MLC/SLC thing sound viable? Has anybody got experience of using Sandisk 2Gb cards with the Wizard?
Click to expand...
Click to collapse
My 2gb card is a Sandisk. No problems sofar. The card is only about half full right now. Ill fill the card up and play with it awhile and see what happens
scotjames said:
Does the MLC/SLC thing sound viable? Has anybody got experience of using Sandisk 2Gb cards with the Wizard?
Click to expand...
Click to collapse
I've been using a SanDisk 2GB card to capacity sine April of this year, I change the contents of the card pretty often as I use it as my mp3/video player, using both the WM5Storage program and a memory card reader in my PC. Has been flawless.
madefree said:
Hey scottjames,
I don't know if this helps as I was using Winamp files and wasn't using Win Media on my PC so that may be why the files got corrupt or just disapeared when I went in again and tried to play them!
So I diched Winamp and am using the gates special and so far so good!
I don't know if that may help but hope so!
Cingular is going to exchange my phone for too many other reasons!
Have a good one, and thanks everyone here!
Click to expand...
Click to collapse
Well now the "THING" is doing the strange things again. . .
settings > memory > SD card says FREE 1903.97 out of 1904.13
NO 5ooMBs of music or word docs
But
when I go file explore > Device > SD Card I see all the music file and even play them OK
WOW thats real weird!
Cant see files in one place but plays the music in another????
So whats UP with this?
Anyone?
d0ug said:
My 2gb card is a Sandisk. No problems sofar. The card is only about half full right now. Ill fill the card up and play with it awhile and see what happens
Click to expand...
Click to collapse
I filled my card lastnight, and have used the pda as normal thoughout the day today. accessed files, copied files, created files, deleted files. I'm not having any issues with my sandisk 2gb.
Thanks
Thanks everyone. I'll maybe just get myself a Sandisk card and let you know how I get on.
I have a Sandisk 2GB and whilst not experiencing the issues above I do have other problems.
When accessing eBooks via Microsoft Reader or playing video files via TCPMP the device will occasionally freeze and the apps cant even be killed by the taskmanager. I have a standard TMobile install and these are the only two additional apps that have been installed.
Ejecting the card usually frees it up.
To be fair I haven't yet tried the card in another device to establish if the card itself is faulty.

HD2 destroyed my SD card?

Hello.
After trying the android booting, for 5-6'th time (all working), now the phone can't see the SD card. I thought it was only on the phone, but when i insert the card, in adapter and connect to pc, then NOTHING happens. Like if the card wasn't there.. Hmm, any clue? Usually I just formatted. But now, I can't format a SD card which "isn't there."
Please.
any one??? :S
mooooooa said:
Hello.
After trying the android booting, for 5-6'th time (all working), now the phone can't see the SD card. I thought it was only on the phone, but when i insert the card, in adapter and connect to pc, then NOTHING happens. Like if the card wasn't there.. Hmm, any clue? Usually I just formatted. But now, I can't format a SD card which "isn't there."
Please.
Click to expand...
Click to collapse
Sounds like your sd card maybe corrupt, they can die for no apparent reason, its happen to me twice in about 4yrs, tho i always buy from CEX they offer a 1yr warranty & just replace it if its within that time.
There's been a few threads about this;
http://forum.xda-developers.com/showthread.php?t=712281
http://forum.xda-developers.com/showthread.php?t=646731
Which brand?
mooooooa said:
Hello.
After trying the android booting, for 5-6'th time (all working), now the phone can't see the SD card. I thought it was only on the phone, but when i insert the card, in adapter and connect to pc, then NOTHING happens. Like if the card wasn't there.. Hmm, any clue? Usually I just formatted. But now, I can't format a SD card which "isn't there."
Please.
Click to expand...
Click to collapse
What is the brand of the memory card?
hey dude,i got the same problem as yours few days ago..cant do much abt it,i just buy a new one..some says the htc that makes the sd card problem
Hi,
My 8 GB sd card lags when i`m scrolling in the file manager.
In addition, the sd card drains the HD2 battery. I loose 35% in 6 hours in flight mode, but only 4% when not in flight mode without the sd card... ( this also yields for the original sandisk 2 GB sd card that was supplied with the phone).
Anyone experienced the same issue?
Is this hardware or software related, and can i fix this myself?
Error check your microSD card using your computer then switch your phone off, put the card back in it and switch your phone back on. The phone will need to index your music/video files etc so go to the relevant tabs and let it do its stuff. See how that helps.
mooooooa said:
Hello.
After trying the android booting, for 5-6'th time (all working), now the phone can't see the SD card. I thought it was only on the phone, but when i insert the card, in adapter and connect to pc, then NOTHING happens. Like if the card wasn't there.. Hmm, any clue? Usually I just formatted. But now, I can't format a SD card which "isn't there."
Please.
Click to expand...
Click to collapse
i got a new HD2 and it came with a MicroSD card. I put a couple of cooked ROMs on it and everything was fine for about a week and then the card jsut stopped working. I didnot use it on any other phone or on my PC and it just died.
I own an HTC Hero as well and i put the card in it but it wouldnt recognize it. It has never happened to me before. Never has a card died on me.
I think its a problem with the way the HD2 accesses the SDcard. I wouldnt know specifics but this is the first phone that fried my SD card.
Hey guys, I had the same issue. The SD card stopped working and cannot be formatted now via computer.
My experience with Windows Mobile is that the SD/CF driver is the weakest link. The problem seems to be simultaneous accesses drive it bonkers. I've had the disappearing card problem on other PDAs but usually removing it, doing a reboot with it out, and then inserting it after the reboot is complete will fix it. If it doesn't show up immediately DON'T do anything for a while, it could be doing a CHKDSK on the card, and if you mess with it it will screw it up worse.
Once it shows up what I would recommend is hooking up via USB in CF Disk mode (not Activesync) and doing a format on the drive from Windows.
Last night I got a new 32gb Class 4 MicroSD from China (unnamed) and stuck it in, worked fine, so I backed up all my data to my 'puter off the T-Mobile Class 2 16gb and changed to the new 32gb SD. I started the copy and after a while went to bed.
This morning I got up and it had died during the copy. It was giving me an error on the new MicroSD. It had copied about 75% but was asking to continue or skip. I ended up having to cancel it because it appeared full but it was not. After a reboot I found a ton of FILEXXX.CHK files which indicated it was doing a chkdsk.
Looking at it with SoftWinter.com's Storage Tools the disk was formatted with 512 byte cluster size, way too small for such a large disk, so it was not really out of space just out of cluster nodes. If you have lots of files (I had 10,000) each takes up at least one, even if the file is only 5 bytes. So I reformatted it from the 'puter to 32k cluster size and started the copy over. Seems to be working better now.
Please note that using larger cluster size also will help performance when writing and reading large files as it has to do less directory accesses. Small cluster size is good if you have a lot of small files as it doesn't waste as much space. You lose on average 1/2 the cluster size for each file, as the last node is almost never full.
mknewman said:
My experience with Windows Mobile is that the SD/CF driver is the weakest link. The problem seems to be simultaneous accesses drive it bonkers. I've had the disappearing card problem on other PDAs but usually removing it, doing a reboot with it out, and then inserting it after the reboot is complete will fix it. If it doesn't show up immediately DON'T do anything for a while, it could be doing a CHKDSK on the card, and if you mess with it it will screw it up worse.
Once it shows up what I would recommend is hooking up via USB in CF Disk mode (not Activesync) and doing a format on the drive from Windows.
Last night I got a new 32gb Class 4 MicroSD from China (unnamed) and stuck it in, worked fine, so I backed up all my data to my 'puter off the T-Mobile Class 2 16gb and changed to the new 32gb SD. I started the copy and after a while went to bed.
This morning I got up and it had died during the copy. It was giving me an error on the new MicroSD. It had copied about 75% but was asking to continue or skip. I ended up having to cancel it because it appeared full but it was not. After a reboot I found a ton of FILEXXX.CHK files which indicated it was doing a chkdsk.
Looking at it with SoftWinter.com's Storage Tools the disk was formatted with 512 byte cluster size, way too small for such a large disk, so it was not really out of space just out of cluster nodes. If you have lots of files (I had 10,000) each takes up at least one, even if the file is only 5 bytes. So I reformatted it from the 'puter to 32k cluster size and started the copy over. Seems to be working better now.
Please note that using larger cluster size also will help performance when writing and reading large files as it has to do less directory accesses. Small cluster size is good if you have a lot of small files as it doesn't waste as much space. You lose on average 1/2 the cluster size for each file, as the last node is almost never full.
Click to expand...
Click to collapse
Hey
i hope for your sake im wrong, but as far as ive been able to find out in my own searching, only san disk has released a 32gb micro sd & its only class 2.
there has been a lot of talk of fake 32gb micro sd's from china, most are actually 4gb re-programed to read as 32gb on your phone or pc, but when you start to fill them with files more than their actual capacity they will only overwrite prev' files & become corrupt.
i actually pick up 1 (32gb) last weekend from a local store, tried to copy the contents of my 16gb, 7gb copied then an error occurred, 2nd attempt 9gb copied but files unreadable by phone or pc, fortunately i always buy from this store & they refunded (£50), straight away, still have 2 16gb cards ive had for about 9mnths with no probs.
there is another longer thread over in the Q&A section, you guys may find some useful feed back over there: http://forum.xda-developers.com/showthread.php?t=646731
Well, the one I got says SanDisk and I have done a full format and surface analysis, it checks out, but I am having trouble writing to it. Not sure what is up with it right now. I knew it was a fake but I thought it was a real fake, not a piece of junk. I hope you are wrong.
I´ve got problems too. I have two SanDisk 16 GB microSDHC cards and both of them are giving similar problems.
I´ve got my HD2 a few days ago and initially I used my old 16 GB card I bought with the X1 (then used with my TP2 and latest the HD2). Everything was working fine initially but then the problems arose. Now I have those problems:
1. Audio Manager has problems reading my music library. iPlay can read it though. Windows Media Player takes a long time building my music library but manages to do that eventually.
2. HTC Album can read my albums sometimes - sometimes not.
3. Resco Photo Manager can read the albums but sometimes it takes a long time to do it.
4. The computer can access the card without any problems after formatting and it seems not to be any problems reading or writing files to it. Installations of cabs stored on the memory card works.
5. Total Commander can access the card without any problems but takes slightly longer time than before to show all folders.
6. Running chkdsk in Windows gives the result of a perfectly working card.
7. The phone is draining battery in an abnormal way with the card inserted.
8. Flashing ROMs from the card worked initially but not any longer. Now it shows the threecolor bootloader screen instead.
The interesting thing is the fact both of my 16 GB cards has the exactly the same symptoms. I will try them in my X1, TP2 and Vivaz later to check out their behaviour.
When I inserts my old 8 GB card (everything made by SanDisk) everything works without any problems. Flashing ROMs work normally etc.
I´m running the Omega XT 3.0 and are using HardSPL3. The 16 GB card has worked perfectly initially with this ROM and HSPL so I don´t think they are related.
The whole thing seems to indicate some kind of "incompatibility" between the phone and the 16 GB cards. It´s like it is unable to handle that size of card correctly. It seems like it "trashes" the file system. My older 16 GB card started to behave badly which caused me to buy a replacement and now that replacement has the exactly the same behaviour.
My 8 GB card is an "ultra" SanDisk card. The troublesome cards are Class 2 cards. I began to have the impression the problem is some kind of issue with Class 2 - because the cards itself seems to be working after formatting.
I have formatted them with either Panasonic SDFormatter and the Format SD application on the phone. Both options gives the same result.

No need to format your SD card any more.

Do not format you SD card, in this way you will loose all your data.
You just need to Defragment you SD card and in this case you will never loose your data but also you will found that your SD card is back to High speed.
Defragmentation can be done using any windows just right click on your SD card then go to tools tab then click on defragment.
Interesting.....
Things never get fully deleted off SD cards anyway...
part of the sd tech is something called wear leveling..
doing a defrag on your memory card is not going to be very accurate.
the card has an on board chip that spreads out the writing of sectors to keep them from wearing out. this is transparent to the system.
Do not defrag a memory card. This consumes write/erase cycles and shortens the MTBF.
aarons6 said:
part of the sd tech is something called wear leveling..
doing a defrag on your memory card is not going to be very accurate.
the card has an on board chip that spreads out the writing of sectors to keep them from wearing out. this is transparent to the system.
Click to expand...
Click to collapse
I tried it on my HD2 and it works, and booting Android come faster as if i format it.
Defragment : it reorganize all the blocks in the SD card (re addressing the blocks)
which make running or opening a file is faster and it give more space.
It only effect on SD card files and not Android system files.
Android system files are found in data.img which is a virtual disk (Formatted as EXT2)
zaidsa3sa3 said:
I tried it on my HD2 and it works, and booting Android come faster as if i format it.
Defragment : it reorganize all the blocks in the SD card (re addressing the blocks)
which make running or opening a file is faster and it give more space.
It only effect on SD card files and not Android system files.
Android system files are found in data.img which is a virtual disk (Formatted as EXT2)
Click to expand...
Click to collapse
yes but because of the write leveling circuit those files are not organized contiguous in the first place.
they are placed in order of what sectors get written to less.
or at least thats how its supposed to work
But, the data.img is one big file on your sd card...
I could see doing a defrag once in a long while, like if you load up with a bunch of MP3s you plan on leaving there. But, if you constantly move files on & off, and defrag often, then you're just wearing your card out faster.
I thought defragmentation was only effective on hard drives?
aarons6 said:
yes but because of the write leveling circuit those files are not organized contiguous in the first place.
they are placed in order of what sectors get written to less.
or at least thats how its supposed to work
Click to expand...
Click to collapse
Try it before you judge
Am pretty sure of what i am talking about.
I think its better on your card to just copy everything on your card to your computer, then format card and copy everything back at once. I thing defragging causes too much writing and erasing on the sectors... it will make your card wear out quicker.
Sent from my HTC HD2 using XDA App
Defrag is only good for harddisk to save seektimes and minimize head movement
on a SD Card is nothing like that, no head that must seek thing.
There is no need to defrag SD Cards or SSD Disks
Quick format : it only clear the address table and it will not rearrange the blocks.
Defragmet is similar to full format but it is much faster and without loosing your data.
For me i will go to Defragment option.
BTW SD card doesn't have a read/write head that may scratch the cylinder (Harddisk),
it is a 0/1 operation (no mechanical parts) so it will not brick your SD card.
"SD card lifetime is 10 years or more."
ByteFax said:
Defrag is only good for harddisk to save seektimes and minimize head movement
on a SD Card is nothing like that, no head that must seek thing.
There is no need to defrag SD Cards or SSD Disks
Click to expand...
Click to collapse
It will reallocate the blocks in the sectors which will put all related blocks in sequence, which will make running an application faster with more free space on your sd card.
Try it and read about it before you judge.
Can you tell me where did you find that kind of info? I thought you shouldnt defragment sd cards and ssd drives. That just doesn't sound right to me...
100% correct.
ByteFax said:
Defrag is only good for harddisk to save seektimes and minimize head movement
on a SD Card is nothing like that, no head that must seek thing.
There is no need to defrag SD Cards or SSD Disks
Click to expand...
Click to collapse
Sent from my HTC HD2 using XDA App
The normal reason people suggest formatting your SD card is so that you can select a larger cluster size, to help with R/W speed and therefore battery life.
A defrag doesn't do this (obviously), so there will be times where a format is definitely the right thing to do.
zaidsa3sa3 said:
It will reallocate the blocks in the sectors which will put all related blocks in sequence, which will make running an application faster with more free space on your sd card.
Try it and read about it before you judge.
Click to expand...
Click to collapse
Can you tell me the access time of a Hard Drive and the one from a SD card?
Access time of a HDD is usually ~9ms-~11ms depending on the size, rotation speed and make. SD/SSD's usually have access times below 0.5ms, but, SD's are quite slower than SSD's which is why people want NAND support so much. NAND is not fast as transferring data but it's access write/read time is at least 10 fold faster.
TonyCubed said:
Access time of a HDD is usually ~9ms-~11ms depending on the size, rotation speed and make. SD/SSD's usually have access times below 0.5ms, but, SD's are quite slower than SSD's which is why people want NAND support so much. NAND is not fast as transferring data but it's access write/read time is at least 10 fold faster.
Click to expand...
Click to collapse
hehe, knew that but my point is that defragging only works on a HD because the head needs to go from one position to another.
Mechanical things take a much longer time so that is why we (I use a SSD so no need to) have to organise the data on the drive so it can read/write in one go.
Actually on SSD's they spread the data around since they wear out. So the controllers randomizes the data around so 1 cell isn't abused all the time.
I would love to see the benchmark of a fragged and defragged SD card.
Guys
I tried it using 2 HTC HD2 T-mobile 16gb as the senario below:
Me :
Install new build mdj v.4.1 without Formating
defrag sd card
run es file explorer
Time taken for the application to load 3 sec
My Cousin:
Install new build mdj v.4.1 without Formating
run es file explorer
Time taken for the application to load 8 sec
Do you think it's the same ?????????????????????
It seems to me that sd cards are going to wear out, probably in about the same amount of time , whether they are defragged or not. We're talking thousands of write cycles here, so 7 or 8 defrags throughout the life cycle of the card isn't going to be a huge deal. And if you wear it out a little faster, that's the price you pay for a possible performance increase. I know sd cards aren't cheap, but they're not ungodly expensive. So I would say format the card when you first get it, try and load all your crap onto it at once (as much as possible) as opposed to slowly adding files as you go, and to yes do a defrag on it at key times, say like if you're removing one Android build and installing another. The benefits of defragging may be small, or even non-existant, but the same can be said of the extra wear that defragging puts on the card.

[Q] 32 gig card trouble

I have recently purchased a 32gb micro sd card. When I go to put new music on it, it shows from the pc side that it is loading on the external drive(g2 phone) and form the phone it says that it is on there. However when I disconnect the phone only the last album that I put on there stays and the music player will state that "this type of file cannot be played". I have formatted the card through the computer and to no avail, it acts the same.. I did format it on the Android and it worked, temporarily and could load music from my computer for a few days, then it stopped. I am clueless as to what is going on with it. p.s. I tried placing it in a card reader and it did the same, but i did not format it first that time. I seem to think the android is placing a bad file on it causing all these issues. (again I say this because when I format it through the phone it will work temorarilly) any help would be great, I really want toload my phone with music.
theradioinside said:
I have recently purchased a 32gb micro sd card. When I go to put new music on it, it shows from the pc side that it is loading on the external drive(g2 phone) and form the phone it says that it is on there. However when I disconnect the phone only the last album that I put on there stays and the music player will state that "this type of file cannot be played". I have formatted the card through the computer and to no avail, it acts the same.. I did format it on the Android and it worked, temporarily and could load music from my computer for a few days, then it stopped. I am clueless as to what is going on with it. p.s. I tried placing it in a card reader and it did the same, but i did not format it first that time. I seem to think the android is placing a bad file on it causing all these issues. (again I say this because when I format it through the phone it will work temorarilly) any help would be great, I really want toload my phone with music.
Click to expand...
Click to collapse
Put the same file on a known good SD card. If it stays, it's a bad card. Most of the time the company the card came from will replace it for free (like Wintec did with a bad card that couldn't handle an EXT4 partition).
It is not just one file, it can be multiple files, like I stated in the other thread (I apologize to do two on here, but I rarely have to ask for help, I am usually able to figure the problem out, but this one has got me) I have checked the card with h2test and it states that it does have 32 gigs on it but that the card is corrupt, I have formatted the quick way with sd formatter. What puzzles me is that at one time I was able to load more on it and now I cannot. I feel that there is a fix, I am just not finding it yet.(okay im testing while updating, if i uplug and replug the phone and place music on it, it will only keep the last folder, for instance i put nirvana nevermind on it, it will keep it, i then put a folder with two albums on it, say radiohead the bends and kid a, it will replace the last one , I am certain that space is not the issue, due to having placed less files on it the first time I restored the card agai)
Did you buy this card from ebay? A lot of counterfeit card on there. Cards that say they are 32gb but will only hold a quarter of that.
ostinq said:
Did you buy this card from ebay? A lot of counterfeit card on there. Cards that say they are 32gb but will only hold a quarter of that.
Click to expand...
Click to collapse
+1
Try writing zeros with dd to the card... but be careful, dd will destroy anything you point it at, without hesitation. This is a typical dd command:
$dd if=/dev/zero bs=1M count=32000 of=/dev/somepartition
Where did you buy it? Like others have mentioned, it sounds like a counterfeit or broken card.
what is dd, and how can i tell if it is fake, every program ive used to check it goes through 29gigs of partition
theradioinside said:
what is dd, and how can i tell if it is fake, every program ive used to check it goes through 29gigs of partition
Click to expand...
Click to collapse
DD is found in the terminal emulator on linux/unix systems. Be carefull, you can destroy everythign on a partition with it.
Also, you'll have to reformat afterwards ... the sdcard
theradioinside said:
what is dd, and how can i tell if it is fake, every program ive used to check it goes through 29gigs of partition
Click to expand...
Click to collapse
Lots of the counterfeits are tampered with to report the "alleged" GB capacity. Its not until you try to transfer the files, that you run into problems and realize you were taken.
Again, where did you buy the card???
I apologize for not having answered your question, I bought it on eBay, I have been given a refund though. Where should I look for one at instead?
I got mine on amazon for like 55 bucks a few weeks ago been working great. It was a class 4 adata with a little blue usb card reader.
okay i bought a sandisk from a trusted store and again same thing, i am lost
What trusted store?
newegg class 4
Yup, that's about the must trusted store there is!
Any luck with lower capacity cards working? I'd say maybe its just a defective card. But its weird to have a string of bad luck like this. Is it possible the SD card tray on your phone is damaged?
Do you have an after market battery? Just curious...
Sent from my T-Mobile G2 using XDA App
Also do you use the turn mass storage mode on/off option?
Sent from my T-Mobile G2 using XDA App

sd card corrupting

Hi,
I have a new 64gb class 10 sd card. It seems that it keeps on corrupting at some point inside my note 3. Most of my music has corrupted and photos i take become corrupted. Im pretty sure if i do a dskchk on pc it recovers them all but i dont have my pc with me now for another 4 weeks. Does anyone know why this is happenning? Ive reformatted the cards several times now its fat32.
The note is unrooter stock and its the first time ive had an sd in it.
Thankss
Are you sure it is an official card and not a fake? There are cheap cards out there that claim to have large capacity (and show as such when you insert them), but in fact they are actually hacked low end small capacity cards... As soon as you go over its actual size, files get corrupted.
gschot said:
Are you sure it is an official card and not a fake? There are cheap cards out there that claim to have large capacity (and show as such when you insert them), but in fact they are actually hacked low end small capacity cards... As soon as you go over its actual size, files get corrupted.
Click to expand...
Click to collapse
Thanks for the reply, how can i check it? I have the unrooted phone itself i dont have a laptop or computer at the moment
There are test tools, but the ones I know of run on pc. One indication of a fake card could be if it was offered online for a ridiculous low price.
Search SD card tools on Google play store, there are apps that can verify its authenticity but like gschot said, PC tools like H2testw are the best and most reliable.
ddogishere said:
Search SD card tools on Google play store, there are apps that can verify its authenticity but like gschot said, PC tools like H2testw are the best and most reliable.
Click to expand...
Click to collapse
Thanks i will try that.
What i can say though is that when i used the pc to copy music over using the sd adapter the computer did it fine. I could play it no problem, then when i put it in my phone things became strange so i put it back into the computer which noticed a problem and suggested a scan. After scanning the files appeared again. I formatted the card to fat32 again and recopied all the music before i left, and 16gb of music has been reduced to 7.5bg of music through corruption. The phone doesnt tell me that they are corrupted. The folders are there with the first letters of the title changef to a μ symbol. E.g. DCIM folder changes to μCIM and the folder will be empty.
The sd card tester dont work because kitkat doesnt let apps write to the sd card. :L
supasye said:
The sd card tester dont work because kitkat doesnt let apps write to the sd card. :L
Click to expand...
Click to collapse
The ~7gb after scanning almost confirms that it's a 8gb card. Format it again & put less than 7gb of files on it and see if will be OK.
There's several threads in the Q&A section...have a read at my posts.
http://forum.xda-developers.com/galaxy-note-3/help/note-3-self-deleting-files-sd-card-t2852399
http://forum.xda-developers.com/showpost.php?p=54068881&postcount=8

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