How to check if your MicroSD Card is busted - Galaxy S 4 Q&A, Help & Troubleshooting

I just recently bought a SanDisk 64Gb MicroSDXC. It's driving me nutts since last night! First I discovered that the phone cannot mount it if it is in exFAT mode. Then i Download a Verbatim Utility Program to format it in FAT32. I thought it was finally ok, I tried transfering some files both via phone plugged-into the pc, and with the card removed from the phone and connected to the pc via card reader. Last night I was able to transfer files from my computer, but when I check it within the phone, it seems it cannot identify the contents nor the folders! I tried resetting it, with and without the Card, but the problem persists. Not only that, it seems that the phone automatically unmounts it at random times!
If anyone can help I would highly appreciate it!

Try to use SD Card Tester to test it.
https://play.google.com/store/apps/details?id=air.com.anotherflexdev.sdcardtester.SDCardTester

My 64GB Sandisk Microsdxc worked fine out of the box, although it unmounted itself once when I rebooted.

Related

[Q] Strange problem with 32 gb card

Ok, so I'm going crazy now, but I just can't figure out what's wrong with my card.
I bought a new 32 gb card. I know, I know, you're gonna say it's a fake card, but it's not. I tested it with H2testw and it fill up the card with 32GB of random data.
So, here's what's happening.
1. The card came formatted, I just swapped it with the old card and the Tab recognized it without problems.
2. I took it out and copied backed up files from the old card onto it.
3. When I put back the card into the tab, only a few folders were visible and other data that was copied and visible via the card reader was no where to be seen on the tab.
4. Then I took it out and tried repeating the process - same thing.
5. I tried quick formatting the card through the PC, and tried everything once again. Now the results were different, but again not all folders were copied.
6. I tried formatting through the Tab. The format went fine. Then I tried copying files through the USB cable (mass storage option). That also went ok, but a few of the files could not be opened. Scanned it with disk check and automatic fix error option.
7. Back to PC, did a full format with a Panasonic sd card formatter. Ran H2testw. No problems. Put the card back, re-rooted the tab (since I started suspecting it could be somehow related to this).
8. The card is back in the Tab, but it's still showing some strange behavior, such as folders dissapearing or files not being readable.
Anyone have any idea what to do? I would also like to note that the card works fine when in my reader, I can copy files to it, open them directly from the card etc. No problems at all. But as soon as I put it in the tab it goes crazy.
P.s. The tab is rooted, firmware is out-of-the-box. I have app2sd, but I didn't put any of the apps on the old card, and all apps work normally with or without the sdcard.
I dunno. Bad card? Or maybe just incompatible with the Tab?
just wait android 2.3 to fix this program
Sent from my GT-P1000 using XDA App
the card is fake,
i had this a while ago, i could copy files over fine and the files showed in the file structure in windows explorer. BUT if i restarted the computer loads of the files went missing, i then found out the 32gb card was in actual fact an 8gb card but some trickery makes it look as if you have copied 32gb over. the best way to test it is to copy over say 25 films at 1gb each, see it copy over, restart your computer and then see how many are left after the restart, you will then see how big your card actually is!! Sorry to be the bearer of bad news but i hope you can send your card back and get a full refund.
I have tried a genuine 32gb card from expansys which works correctly in my galaxy tab (JM6 firmware) and my x10i.
AFAIK only Sandisk and Kingston make 32GB microSD cards now.
I got my Kingston 32GB card from Newegg and it works great in my Tab.
Where did you buy your card?
I would not dare to buy SD card from eBay or from a store that has no good return policy.

SanDisk 64GB SDXC - Cannot Format, Delete, or Add...

Hi all,
So my SD card recently kept unmounting itself from my phone, and I've been allowed to get a full refund as it's a known compatibility issue with SanDisk cards and S4.
The problem here is that I cannot format my card using most means (through PC, MAC, Phone, and DSLR). The card is currently using exFAT. It mounts to my system fine, I can see all files stored perfectly, although whenever I delete the files individually and remount my SD card, all the files appear again!!
Through PC, I have used Disk Management, EaseUS Partition Manager.
Through MAC, I've used Disk Utility, SD Card Formatter v3.
At the moment, i don't feel comfortable in sending it back, with personal data easily accessible.
Anyone have any other methods / ideas?
Thanks!
GUIFormat ?
Same issue here. if anyone finds a solution pm me or reply
Sandisk messed up and make faulty card. It seem this only happened to 64gb SDXC card. I already had mine replaced under warranty 1 time and then after a while it's acting up again. So I ditch that card and buy the other brand.
Sent from my GT-I9500

SD Card showing Unsupported and Unmounting automatically on Android, fine in laptop

Hi,
My Sandisk Ultra 32GB microsd card is not getting mounted on my Moto X Play from yesterday on. It was working perfectly before that.
Problem in Detail: Yesterday when i tried to play some music only I realized that its not getting mounted. I tried removing the card and reinserting it. But it's not showing up any notification. When I went to 'Storage and USB' settings suddenly after reboot, its showing 'Unsupported' for a minute and is getting unmounted automatically.
Possible Cause: One of my friend connected my phone with USB cable to his laptop day before yesterday for transferring data. I dunno exactly whether its infected or he didn't eject it properly.
What all I Tried: Initially, I tried connecting it to my laptop using Card Reader. Fortunately, everything was fine inside the system. The file system FAT32, all the data it had, and no memory was unallocated. Afterwards I did a quick format and a complete format as well, with file system FAT32. Both didn't help anyway. Then I installed mini tool partition wizard. But haven't done anything with that yet.
Kindly help me with this ASAP.
Can you use your SD card with the phone ?I have the same problem - my sd card is not recognized by my MXP. There was some speculation that the SD card slot is not working properly or just damaged however all SD cards I have are working fine just nor with my phone.As of today there seems to be no fix to this bug.
Chaotick said:
Can you use your SD card with the phone ?I have the same problem - my sd card is not recognized by my MXP. There was some speculation that the SD card slot is not working properly or just damaged however all SD cards I have are working fine just nor with my phone.As of today there seems to be no fix to this bug.
Click to expand...
Click to collapse
I have tried this SD card in my friend's phone and it is working fine.
Afterwards, tried formatting the card from that phone, my laptop, (quick & complete with different names) and the tool "sd card formatter" (erased everytihng).
I even tried a factory reset of my phone.
Nothing helps. Really frustrated
try the slow format sd card option from pc...

Disappearing files in MicroSD Card.

Greetings,
I transferred my Pictures and music from my old SanDisk ultra 64GB micro SD card to my new Samsung Ultra + 128GB card. My first attempt at loading the data was through the restore function on the LG Bridge app from my PC. 3 day later when the restore was finished the phone indicated that the data was corrupted and had to be formatted. The second time I got a "file Corruption" message on my SD card when I was transferring files while both cards were in card readers. The next attempt was with the old card in the card reader, and the new card in the device, with the device connected to my laptop directly by USB, the end result being the Corrupted file message (again). My most recent attempt is by downloading files from my PC to my device card. Now the files are gone when I restart the device. The Music file in my folders are gone but the music outside of the folders are still present. All my pictures on my card are gone as well. ANY help is desperately needed and appreciated!!!
Did anyone have an answer to this? I'm having the same issue with my V30 - the files I copy to the external SD card by any means (AFT, SyncMate, FTP, SyncTunesMac) disappear...
I don't have good news for either of you that sounds like the sd card or the card port are going bad. Is it possible your ad cards are counterfeit as in does this behavior happen with another known good card...
I would try the following
First backup anything you can
Try a known good card that works in other devices and see if the behavior persists if yes
It is an issue with the phone not the card if the behavior stops you both got bum cards be more careful where you buy amazon is not even safe.
If the behavior persists try resetting the phone full factory. If custom Rom reload the rom. If the issue persists past that you most likely have a hardware issue that requires mainboard replacement.
Also try uploading files to the cards using the computer(with the micro sd to sd adapter) and check if the files stay(using the phone)
I had a similar issue with Moto G Turbo with Lollipop. It permanently damaged 2 MicroSD.
I ended doing a factory reset and MicroSD worked correctly again.
Counterfeit
themorn said:
Greetings,
I transferred my Pictures and music from my old SanDisk ultra 64GB micro SD card to my new Samsung Ultra + 128GB card. My first attempt at loading the data was through the restore function on the LG Bridge app from my PC. 3 day later when the restore was finished the phone indicated that the data was corrupted and had to be formatted. The second time I got a "file Corruption" message on my SD card when I was transferring files while both cards were in card readers. The next attempt was with the old card in the card reader, and the new card in the device, with the device connected to my laptop directly by USB, the end result being the Corrupted file message (again). My most recent attempt is by downloading files from my PC to my device card. Now the files are gone when I restart the device. The Music file in my folders are gone but the music outside of the folders are still present. All my pictures on my card are gone as well. ANY help is desperately needed and appreciated!!!
Click to expand...
Click to collapse
By the above description, this is almost certainly a counterfeit sd card.
Google "H2TestW_1.4.zip" to test ANY card you buy before you ever use it.
It's a solid, lightweight program that does its job well.
Anything that says it will do the job better / faster is blowing smoke up your skirt.

Continuous restarts - new micro SD card effects :(

Hello everyone, dire need of help here!
I got a new Micro SD card 64 GB Strontium for the phone and formatted it to use as Internal Memory - all previous phones I have been using SD card as portable storage, this is the first time I am using it as internal memory.
It worked fine for 2 days but suddenly yesterday all the photographs folders disappeared from the Gallery app (DCIM folder). I restarted the phone a couple of times but no luck - first some thumbnails disappeared, and then the entire folder!
Since this morning, the phone get restarted continuously, non-stop, while the SC card is inside the phone. If I remove the SD card, the phone works normally. So I am unable to use phone when SD card is inside - unable to copy all the files from the SD card onto a laptop even since the phone restarts before I can do anything on the connected laptop.
What do you think is the problem? How to resolve it?
How to recover all the pics and files on the SD card if I have to format it?
GSKC
GSKC said:
Hello everyone, dire need of help here!
I got a new Micro SD card 64 GB Strontium for the phone and formatted it to use as Internal Memory - all previous phones I have been using SD card as portable storage, this is the first time I am using it as internal memory.
It worked fine for 2 days but suddenly yesterday all the photographs folders disappeared from the Gallery app (DCIM folder). I restarted the phone a couple of times but no luck - first some thumbnails disappeared, and then the entire folder!
Since this morning, the phone get restarted continuously, non-stop, while the SC card is inside the phone. If I remove the SD card, the phone works normally. So I am unable to use phone when SD card is inside - unable to copy all the files from the SD card onto a laptop even since the phone restarts before I can do anything on the connected laptop.
What do you think is the problem? How to resolve it?
How to recover all the pics and files on the SD card if I have to format it?
GSKC
Click to expand...
Click to collapse
Try this
https://forum.xda-developers.com/android/software/auto-formatting-sdcard-to-internal-t3583875
I would try to recover pics by mounting SD-CARD on PC. I've had SD-CARDs go bad a few times.

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