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[FIX] sandisk 64gb micro sd card

Like alot of you, I recently had alot of trouble with my sandisk 64gb micro sd card. this fix is pretty easy but it worked for me! so check it out:
you need two programs: SD formatter( can be found on the sandisk website) and easeus partiton master( you can use any program that lets you format partitions)
you will also need the sd card adapter to put you micro in, and an sd card reader
Step 1: connect your sandisk 64gb microsd card to the computer with the adapter it came with in the box. My laptop has the sd card reader built in
I dont think it will work unless you connect it this way.
Step 2: open sd formatter, it should have recognized your card if not click refresh. after its recognized click Options and set format type to full (overwrite) format the sd card. this will take a long while so you might wanna go watch tv or something?
step 3 : after its done formatting open partition master and right click on the sd card and format it to fat32. your going to have to click apply on the top right hand corner for it to work
you should be set. DONT FORMAT IN THE ANDRIOD SETTINGS. for some reason when ever i fixed the micro and tried formatting it in my phone it would mess up everything thing again.
I keep a 32 gb in my s4 now and use my 64 in my note 10.1 because i need the space there more. Let me know if this works for you!

britoskates said:
Like alot of you, I recently had alot of trouble with my sandisk 64gb micro sd card. this fix is pretty easy but it worked for me! so check it out:
you need two programs: SD formatter( can be found on the sandisk website) and easeus partiton master( you can use any program that lets you format partitions)
you will also need the sd card adapter to put you micro in, and an sd card reader
Step 1: connect your sandisk 64gb microsd card to the computer with the adapter it came with in the box. My laptop has the sd card reader built in
I dont think it will work unless you connect it this way.
Step 2: open sd formatter, it should have recognized your card if not click refresh. after its recognized click Options and set format type to full (overwrite) format the sd card. this will take a long while so you might wanna go watch tv or something?
step 3 : after its done formatting open partition master and right click on the sd card and format it to fat32. your going to have to click apply on the top right hand corner for it to work
you should be set. DONT FORMAT IN THE ANDRIOD SETTINGS. for some reason when ever i fixed the micro and tried formatting it in my phone it would mess up everything thing again.
I keep a 32 gb in my s4 now and use my 64 in my note 10.1 because i need the space there more. Let me know if this works for you!
Click to expand...
Click to collapse
It really depends on the troubles you have, most of them are some kind of incompatibility with the S4 firmware and the 64GB SD card and formating this will not help. My issue was each time i'd put music on my SD, my system status would trip to custom, also my music would not always show up at boot. This has been a recurring problem with the sandisk cards no matter how i formated it. And yes, i did use SDFormater 4.0 and still had the issue. My only solution was to get a Samsung 64GB SD and no issues since

Sometimes mine removes itself, but a media rescan or reboot fixes it. Doesn't really bother me.

I use a 64gb PNY class10 and its flawless for me.I think the issue is witg the sandisk bran.
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Figured this is a good thread to post my experience.
I had a MicroSD card I thought was bad. What happened was I was formatting the device to ext4 at the time using a older microSD USB adapter i had. Basically, the microSD card reader died while it was in that process. Using a microSD > SDAdater and a built in SD card slot on my laptop I was unable to format the drive in Windows or MacOS. (I was formatting the device via the USB reader on my Desktop in Ubuntu). Ubuntu does not see my card reader on my laptop so I was unable to use that). I thought I killed it. It was a SanDisk microSDXC 64gb card.
So I ordered a new Samsung microSDXC and a new microSDXC USB card reader. I got them both. New card worked great. I decided to play with the card a bit. Using Ubuntu, gparted specifically, with the new adapter I could no create or modify partitions on the old microSD card. It would fail out every time, different errors for ext4, exFAT and Fat32. So. In Gparted I went to Device > Write new partition table.After I did that I would able to format the drive in Ubuntu to whatever filesystem I wanted, and the card works in the phone, mac, windows, everything.
Just a heads up to help any others with issues. Rewriting the partition table may help if somehow it gets corrupt because of some write fail,

I ve 2 64gb sandisk 10x microsd with Samsung S4 I9005 with Android 4.3. I formatted with android, also Windows 7 64bit with various types of sizes on laptop. However on laptop or on phone after writing some files and disk scanning, it gives many disk errors. I wonder if it is software or microsd hardware problems. There is no problem with 32 gb.
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Found the Culprit!
Considering I encountered this write protect error TWICE with the exact same product, and after having read forums that show it's a common problem, I conclude that the problem is with either this specific SanDisk product or a particular batch of this product:
Exact product specs: SanDisk Ultra 64 GB MicroSDXC Class 10 UHS-1 Memory Card with Adapter (SDSDQU-064G-AFFP-A)
These carry a lifetime warranty. A word of advice: if you go for a replacement, ask for a different 64GB model, or try a different size of the same model (I got 2 x 32GB cards instead). If they insist on giving back the exact same model, I'd suggest you use that card anywhere except a smartphone!

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

64GB Sandisk Ultra micro SD cards not working on S5 and Note 10.1

So,
I understood that I could use up to 128GB on the S5.
If this is true, why Can't I use a standard sandisk Ultra micro SD card of 64GB? The menu shows me I can unmount and format, but that doesn't seem to work. I tried formatting in MS-DOS (FAT) format using my Mac (I don't have windows), which worked for my Note 2 but not my S5.
If I try writing a file to the micro SD card it says: "ERROR, could not write file".
When I try to format using the phone, it says no card installed (despite the card being installed, its size being indicated, the unmount and format options being available, etc).
Interesting, I have a second one installed in my note 10.1 2014 edition, and that one behaves a little different. It is also not usable but it greys out the unmount and format options as if the card does not exist (yet still it indicates the available size). Note, for this one I also used the MS-DOS (FAT) formatting method on my Mac.
I know the micro SD cards for both the S5 and the note 10.1 2014 edition are both ok, because I tested them on my Note 2, which reads and writes to the cards perfectly fine.
Both the S5 the tablet and the microSD cards were bought on Singapore Airport.
For info, the tablet runs 4.3 and the S5 runs 4.4.2 straight from the box.
Can someone help me with this?

So I found for the Note 10.1, if I format it with my Note 2, it accepts the card and I can use it normally.
The S5 does not do this, so I suspect this is another major issue with kitkat 4.4.2 (I also have VPN issues with 4.4.2 which I don't have on 4.3)

I have the same card you have in my S5 (it was in my S4 before). I have no issue with the card. But I cannot use other app than the stock file manager to write to it. This is a Kitkat issue though.

Airax said:
I have the same card you have in my S5 (it was in my S4 before). I have no issue with the card. But I cannot use other app than the stock file manager to write to it. This is a Kitkat issue though.
Click to expand...
Click to collapse
i have a 64gb sdhc and i get the error icon on pic and videos when i try and transfer from laptop, phone storage to sd or any type of way the s5 will show the crash icon on the pic and wont view it. Ive used a new 64gb sdxc and 64gb sdhc both did the samething.

I've had 2 of the same genuine SanDisk 64gb cards fail in a similar way on my S3 because I tried to format in Fat32 so it would work with directory bind to move data to external but both times it killed the cards and only a few formatting programs even recognised the card in the end, So this time I'm taking no risks and the card was formatted in S3 then S5 and has gone nowhere near a PC and has run perfect for over a year now.

Michael_P said:
I've had 2 of the same genuine SanDisk 64gb cards fail in a similar way on my S3 because I tried to format in Fat32 so it would work with directory bind to move data to external but both times it killed the cards and only a few formatting programs even recognised the card in the end, So this time I'm taking no risks and the card was formatted in S3 then S5 and has gone nowhere near a PC and has run perfect for over a year now.
Click to expand...
Click to collapse
And I regularly put my Micro SD into a PC to copy files without issue.

Airax said:
And I regularly put my Micro SD into a PC to copy files without issue.
Click to expand...
Click to collapse
Just try to avoid formatting in PC because that's where you might get the problems... And anyway I just backup on flash drive through OTG because it saves all that hassle of installing drivers on everything and sitting at the computer or removing the card most days.

I have the same problem here. I have two microSD Samsung 64GB class 10 original (one of these I got on the launch event of Galaxy S5 at Barcelona). Before S5 I had a Galaxy Note 3 and it worked without problems. So I changed my phone to a S5 and both can't be recognized in it. So I bought a 32 GB Sandisk 'cause someone suggest an incompatibility with 64 GB / FAT 32. On the microSD slot, the phone won't recognize it. At USB OTG, S5 recognize only the 32GB... both of 64GB still can't be recognized. WTF?
And yes: all the SD cards can be used normally at PC, W10 tablets...

Galaxy s5 not recognising sd card

I have a 8gb and 32 gb sandisk memory card and for some reason my S5 is not recognising them.
I have tried the 2 memory card in another phone and they work fine, maybe the memory card slot is faulty.
someone said the S5 will only accept a new memory card due to he latest software implication. is that correct
any help much appreciated.

Format it in your computer. Format it as NTFS for better performance, format it as FAT32 for best compatibility.

jopat said:
Format it in your computer. Format it as NTFS for better performance, format it as FAT32 for best compatibility.
Click to expand...
Click to collapse
ive tried formatting on both methods. but still not working or recognising it. and cant mount it as its greyed out on my S5
maybe the memory card slot is faulty or damaged.

Try at least two other different brands of microsd. If they are still unrecognizable then your fear could be correct.

SD card damaged

Hi everyone,
i have a G900F running on the current version of the ALEXNDR Rom, rooted, Knox 0x1, Android 6.0.1.
I have my SD card formatted as (mixed) adoptable storage (via adb), so I have 50% of space as SD card memory, 50% as adoptable storage.
And now for the problem: The SD card is repeatedly shown as "damaged". As soon as I put it into my PC, it'll work without any problems, but the SGS5 will work for quite a time with it, and then suddenly shows it as damaged and will not mount it unless you format it. It usually happens when a larger amount of data is written to the card.
So I thought that the card might really be damaged (was an old and small and slow one) and went vor a SanDisk Extreme 64GB card - same thing here. Then I read about some problems with Samsung devices and SanDisk cards (may the be true or not, I dont know) and swapped it for a Samsung 32 GB Pro SD card - same thing here.
Does anyone know why this is happening and how to stop it? Or will the adoptable storage just not work?

In addition: I could reproduce this when I was downloading Videos to the SD card from Amazon Prime Video for offline use. Seems that a) this is a large amount of data and b) split into thousands of small files. I dont know if its the number of files or the amount of data, but when I deleted the folder on my PC and put the card back into the phone, it suddenly worked perfectly again. Any ideas on this?

Hey there how are you?
I recently have had an issue with my samsung 128 sd card that was formated in a 50/50 mix from adb too.
As the sd card was formatted in exfat I posted an issue on the exfat home page. https://github.com/relan/exfat/issues/49 I was provided with advice on my mac on how to reformat it using the dd command. This was the only command that I came across which gave me an input output error indicating a hardware issue on the sd card.
I have since purchased a new sd card. I'm thinking of formatting it as either an ext4 format or f2fd format to see whether this makes an impact of its longevity.
Hope this helps.
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