Database Info

[Q] 64gb SD card?

Does the phone support 64g SD card?

Officially no, but supposedly, microsdxc is compatible with microsdhc, so you may be able to use it.

wow
64 gb! this could change everything... I could finally frag my old 80gb ipod! I dont have anyone got this yet? I really would love to know if i need to buy one, but how long would it take to scan the media card?

ijustdontcare said:
64 gb! this could change everything... I could finally frag my old 80gb ipod! I dont have anyone got this yet? I really would love to know if i need to buy one, but how long would it take to scan the media card?
Click to expand...
Click to collapse
Depends on the class
Sent from my SCH-I510 using xda premium

Sandisk 64GB Micro SDXC
http://www.youtube.com/watch?v=yYUg14u_co8

Not on Newegg. Are they even for sale yet?
Sent from my Droid Charge running Infinity Beta

I'm curious if anyone ever tried this. I'm an avid audiobook listener, and have a large collection. It would be a pain to swap cards, so I'd rather have a larger one if it would accept it. I know that Samsung has said this was a SDHC phone, but other "SDHC" phones have had success with the 64GB cards. Anyone have a clue on this?

mthous01 said:
I'm curious if anyone ever tried this. I'm an avid audiobook listener, and have a large collection. It would be a pain to swap cards, so I'd rather have a larger one if it would accept it. I know that Samsung has said this was a SDHC phone, but other "SDHC" phones have had success with the 64GB cards. Anyone have a clue on this?
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Click to collapse
I have no clue, but you could use the Google Drive app or Google Books to store your collection - that way, you won't need a card.

jco23 said:
I have no clue, but you could use the Google Drive app or Google Books to store your collection - that way, you won't need a card.
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Click to collapse
That would be great, if I had unlimited data or constant access to wifi. I do not have the first, and at work, the wifi is locked with a password only the bosses get. I have a usb wifi adapter on my computer that will share my internet with my ad-hoc enabled devices, but alas, the charge does not have this capability either (unless my endless searching has missed something somewhere). So direct storage and access is my only chance (also, I have limited space on my computer, so storing and listening to them there is not feasible either.

mthous01 said:
That would be great, if I had unlimited data or constant access to wifi. I do not have the first, and at work, the wifi is locked with a password only the bosses get. I have a usb wifi adapter on my computer that will share my internet with my ad-hoc enabled devices, but alas, the charge does not have this capability either (unless my endless searching has missed something somewhere). So direct storage and access is my only chance (also, I have limited space on my computer, so storing and listening to them there is not feasible either.
Click to expand...
Click to collapse
well, you don't have to download all of the files at once - just one at a time. perhaps the night before you can sync the book you want to listen to your phone to have it ready the next day.

mthous01 said:
I'm curious if anyone ever tried this. I'm an avid audiobook listener, and have a large collection. It would be a pain to swap cards, so I'd rather have a larger one if it would accept it. I know that Samsung has said this was a SDHC phone, but other "SDHC" phones have had success with the 64GB cards. Anyone have a clue on this?
Click to expand...
Click to collapse
From what I've heard a 64GB card works with this phone.
Sent from my SCH-I510 using xda premium

+1 believe imnuts had a 64 on his...
Charged withTweaked 3.0b & TrICS5.0

YES you absolutely can run the SanDisk 64GB class 10 micro SDXC card in your HD2. The phone does read the full 64GB and can access it all. You do have to reformat it first as it is in exFAT which can't be read. It needs to be formatted in FAT32. The kicker with that if you try to format in your PC, MS has deemed that FAT32 is 32 GB max and if you use the inbuilt format in any version of Windows, it will only format it in exFAT or NTFS. I also tried using a program called SDFormatter but it would not allow me to format in FAT32 either. I ended up using EaseUS Partion Master Home Edition, which is a free program. It worked a charm, and was very fast as well, Then I xxcopy'ed my SD card contents onto the new 64GB card and installed it in my phone. Both my WM 6.5.5 and my SD Android 2.2 are working perfectly, though the Android may be just a bit slower now and then. Both my 32GB and my 64GB are class 10s. I use XXcopy to keep a backup of my SD card on my computer, just in case. I update the backup every couple weeks or if I have updated anything significantly (which seems to be all the time with Android apps). I am running Core Cell Evo v4.1 and CoreDroid v.08. Here are the links to Partition Master http://www.partition-tool.com/download.htm and XXcopy http://www.xxcopy.com/xcpydnld.htm

marcsayer said:
YES you absolutely can run the SanDisk 64GB class 10 micro SDXC card in your HD2. The phone does read the full 64GB and can access it all. You do have to reformat it first as it is in exFAT which can't be read. It needs to be formatted in FAT32. The kicker with that if you try to format in your PC, MS has deemed that FAT32 is 32 GB max and if you use the inbuilt format in any version of Windows, it will only format it in exFAT or NTFS. I also tried using a program called SDFormatter but it would not allow me to format in FAT32 either. I ended up using EaseUS Partion Master Home Edition, which is a free program. It worked a charm, and was very fast as well, Then I xxcopy'ed my SD card contents onto the new 64GB card and installed it in my phone. Both my WM 6.5.5 and my SD Android 2.2 are working perfectly, though the Android may be just a bit slower now and then. Both my 32GB and my 64GB are class 10s. I use XXcopy to keep a backup of my SD card on my computer, just in case. I update the backup every couple weeks or if I have updated anything significantly (which seems to be all the time with Android apps). I am running Core Cell Evo v4.1 and CoreDroid v.08. Here are the links to Partition Master http://www.partition-tool.com/download.htm and XXcopy http://www.xxcopy.com/xcpydnld.htm
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Wrong forum

JihadSquad said:
Wrong forum
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Click to collapse
Still fairly useful.
Sent from my SCH-I510 using xda premium

JihadSquad said:
Wrong forum
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Sorry I was in an HD2 forum trying to post this, and the XDA system told me there were similar messages I should check out first. I was in a rush and it never occurred to me it would look for messages in other forums. I assumed it searched for similar messages in the same forum. My bad, expected the XDA system to be smarter than that. Ditto for deleting a message. I'd gladly delete the SOB but after wasting 1/2 hour I didn't have trying to figure out how the hell you to delete a message, I just gave up. If any moderators see this and want to delete my messages here in this forum, PLEASE feel free.

SanDisk Micro SDXC 64 GB Class 10 does it work?

I have only had my TF700 for aboutdifferently. w but while was waiting for delivery I ordered the SanDisk Micro SDXC 64 GB Class 10 card. I have never had be concerned about type, size or class working in my pc, and laptop or tablet. I admittly I have never ordered such a large card for a tablet before. I thought at the price of the TF700 it should take just about anything. That is until I read through this accessories thread that I found out differently. Can someone tell if anyone has found a way to make this card work in the tablet or the TF201 dock? Thanks

Refer to this: http://forum.xda-developers.com/showthread.php?t=1803084
You maybe able to find your answer there.
Cheers

lartomar2002 said:
I have only had my TF700 for aboutdifferently. w but while was waiting for delivery I ordered the SanDisk Micro SDXC 64 GB Class 10 card. I have never had be concerned about type, size or class working in my pc, and laptop or tablet. I admittly I have never ordered such a large card for a tablet before. I thought at the price of the TF700 it should take just about anything. That is until I read through this accessories thread that I found out differently. Can someone tell if anyone has found a way to make this card work in the tablet or the TF201 dock? Thanks
Click to expand...
Click to collapse
I have this card and it worked fine right out of the box. No need to format or re-format. I also have the SD version of this same 64gb card in my dock, and it also works fine with simply inserting it.

DLCPhoto said:
I have this card and it worked fine right out of the box. No need to format or re-format. I also have the SD version of this same 64gb card in my dock, and it also works fine with simply inserting it.
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I have this same card and it works straight out of the box. Only issue is you can not use the SD card for flashing it seems. You would need to format the micro sd too FAT32 if you want too use it for that. Otherwise have another SD card like a 4gb or 15gb that is FAT 32 when you want to mess around with flashing other rom's or images through RDK.

Dumaru said:
I have this same card and it works straight out of the box. Only issue is you can not use the SD card for flashing it seems. You would need to format the micro sd too FAT32 if you want too use it for that. Otherwise have another SD card like a 4gb or 15gb that is FAT 32 when you want to mess around with flashing other rom's or images through RDK.
Click to expand...
Click to collapse
And how about creating two partitions? A small one in FAT32 for flashing purposes and the rest in exFAT? Wouldn't that work maybe?

I got my 64gb card today. I ordered the SanDisk Ultra microSDXC class 10 uhs - I but they sent me the SanDisk Mobile Ultra microSDXC class 10 uhs - I card. Don't know the difference between them. I glad I ordered when I did because I only paid $44.00 and now it has gone back up. So, I carefully opened the the package just in case I had to return it. Put it in the sd card adapter put it in the sd card reader on my Win 7 64bit pc. I down load a couple of 1080p hd YouTube videos and transferred them to the microSDXC SDcard. I put the card in the TF700 (with my fingers crossed) and the TF700 recognized it. I then was able to play the 2 mp4 1080p videos perfectly. I did not have to re-format, it worked right out of the box

I could be wrong but I thought I saw a commit that added ntfs and exfat compatibility to CWR. I have this same card. When I looked at the partition it had, there was 16mb of unpartitioned space before the exfat partition. I just reformatted the partition to fat32 so I could use it with twrp. However I still couldn't mount it in twrp. I reformatted the entire card this time using fat32 and leaving no unpartitioned space. It now mounts fine in twrp, but I'm tempted to reformat to exfat again and see if it works on CWR.

P!X3L said:
I could be wrong but I thought I saw a commit that added ntfs and exfat compatibility to CWR. I have this same card. When I looked at the partition it had, there was 16mb of unpartitioned space before the exfat partition. I just reformatted the partition to fat32 so I could use it with twrp. However I still couldn't mount it in twrp. I reformatted the entire card this time using fat32 and leaving no unpartitioned space. It now mounts fine in twrp, but I'm tempted to reformat to exfat again and see if it works on CWR.
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Please post results.

lartomar2002 said:
Please post results.
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Mine is formatted in exFAT and it works perfectly
Sent from my ThunderBolt using xda app-developers app

ArmyAg08 said:
Mine is formatted in exFAT and it works perfectly
Sent from my ThunderBolt using xda app-developers app
Click to expand...
Click to collapse
Are you using TWRP? If so have you tried to do a backup? When I try to use TWRP it does not enable the external sd card.

Does this card support Data2SD? If so, how is the random write

P!X3L said:
I could be wrong but I thought I saw a commit that added ntfs and exfat compatibility to CWR. I have this same card. When I looked at the partition it had, there was 16mb of unpartitioned space before the exfat partition. I just reformatted the partition to fat32 so I could use it with twrp. However I still couldn't mount it in twrp. I reformatted the entire card this time using fat32 and leaving no unpartitioned space. It now mounts fine in twrp, but I'm tempted to reformat to exfat again and see if it works on CWR.
Click to expand...
Click to collapse
What did you use to format to FAT32? My windows 7 only offers exFAT and ntfs.

lartomar2002 said:
What did you use to format to FAT32? My windows 7 only offers exFAT and ntfs.
Click to expand...
Click to collapse
Since windows only offered to format upto 32Gb, so if you want anything bigger you should download Fat32format tool here:
http://www.softpedia.com/dyn-postdownload.php?p=79375&t=0&i=1
Enter the url then hit enter, wait a few seconds and a download will appears.

lartomar2002 said:
What did you use to format to FAT32? My windows 7 only offers exFAT and ntfs.
Click to expand...
Click to collapse
I used MiniTool Partition Wizard. By far the best partition management software for windows 7. Oh and the maintainer for the tf700t CWR said there are some library issues preventing exfat from working correctly at the moment. Hopefully we'll be able to use exfat in the future.

my piece of advice is to make just one partition and have it be MBR (master boot record). don't do any linux or mac GUID stuff. then I formatted it as exFAT. got it working today =)

I can report that on my unlocked TF700 w/ CWM Touch recovery & CleanROM 2.4 my 64GB card just like yours works perfectly.
However - I did have some issues getting TWRP recovery to read various cards.

I figured I would chime in
the SDSDQUI-064G-U46S works in my tf700 without a problem. I took it out of the packaging and placed it into the tablet, copied a 17gb bluray over (which was not fast btw) without issues.
This may be beneficial to people considering I just bought three of them for 33.60 each plus tax.
price matched amazon.ca 46.00 to bestbuy.ca at 169.99 with 10% price beat.

icydude said:
I figured I would chime in
the SDSDQUI-064G-U46S works in my tf700 without a problem. I took it out of the packaging and placed it into the tablet, copied a 17gb bluray over (which was not fast btw) without issues.
This may be beneficial to people considering I just bought three of them for 33.60 each plus tax.
price matched amazon.ca 46.00 to bestbuy.ca at 169.99 with 10% price beat.
Click to expand...
Click to collapse
Are you using a custom recovery? If you are does it recognizing the external card?

icydude said:
I figured I would chime in
the SDSDQUI-064G-U46S works in my tf700 without a problem. I took it out of the packaging and placed it into the tablet, copied a 17gb bluray over (which was not fast btw) without issues.
This may be beneficial to people considering I just bought three of them for 33.60 each plus tax.
price matched amazon.ca 46.00 to bestbuy.ca at 169.99 with 10% price beat.
Click to expand...
Click to collapse
i bought the same card but BSPlayer cannot recognize the movie i saved. I can use the file manager though to open it and select BSPlayer to play the movie. Is yours the same? which ROM and ver do you have?

[Q] cyanogenmod 10 and problems mountind a 64gb microsd card.

Im going to pull my hair out. I finally managed to root/upgrade to cyanogenmod 10 and now i cant read my external 64gb microsd card. It use to work just fine in my stock Asus Infinity and now it doesnt. I tried using other mounting methods, but they were meant for other devices(like Evos, Galaxy, whatever). It can read other microSd cards, like 32gb and 8 gb, but i dont want my 64gb going to waste. Can someone help me and i apologize for being a pest.

I do not have my 64 GB yet -- I'm still a little wavering about ordering the Sandisk Ultra Micro SDHC Card 64GB Class 10/UHS-z as the reports of it working or not vary -- but I am curious as to how it is formatted. That might help the more knowledgeable folks out in determining the root cause. I gather it did work on stock? Can you try and reflash CROMI (after making a nandroid backup) and see if it works again?

I have a Sandisk 64GB MicroSD UHS-1 card (the red and grey one) and it works beautifully on CROMI

sbdags said:
I have a Sandisk 64GB MicroSD UHS-1 card (the red and grey one) and it works beautifully on CROMI
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Click to collapse
In the dock or in the tablet itself? ( I don't know if this still matters... -- it used to!)

MartyHulskemper said:
In the dock or in the tablet itself? ( I don't know if this still matters... -- it used to!)
Click to expand...
Click to collapse
Works fine in both.

It use to work fine before I installed cyanogenmod10. To get it to work on the original operating system, I had to format it in my phone to create the partitions because it wouldnt recognize the card in the tablet (wouldnt let it mount or anything). I tried doing the same thing again this time and it didnt work(not allowing it to mount). Im inserting the microsd directly into the tablet.
BTW, thanks for the replies so far, I do appreciate it. Any info is useful

Sounds like a cm issue. Have you asked other cm users if they have similar issues?

prpitbull9 said:
It use to work fine before I installed cyanogenmod10. To get it to work on the original operating system, I had to format it in my phone to create the partitions because it wouldnt recognize the card in the tablet (wouldnt let it mount or anything). I tried doing the same thing again this time and it didnt work(not allowing it to mount). Im inserting the microsd directly into the tablet.
BTW, thanks for the replies so far, I do appreciate it. Any info is useful
Click to expand...
Click to collapse
No problem, that's what we're in here for. Partially...
What filesystem did you format to? Have you tried redoing it? GParted has been good to me, I don't know what system you have to your disposal to reformat. Why are you doing multiple partitions -- are you aiming for the data2sd mod? Have you tried making it a single partition? If you insert it into your phone, it does work, I gather -- if you make copy a file to the card, is it actually written?
Sent from a comfortable chair from the outer ring of Purgatory. The red guy asked me to say 'hi'.

MartyHulskemper said:
No problem, that's what we're in here for. Partially...
What filesystem did you format to? Have you tried redoing it? GParted has been good to me, I don't know what system you have to your disposal to reformat. Why are you doing multiple partitions -- are you aiming for the data2sd mod? Have you tried making it a single partition? If you insert it into your phone, it does work, I gather -- if you make copy a file to the card, is it actually written?
Sent from a comfortable chair from the outer ring of Purgatory. The red guy asked me to say 'hi'.
Click to expand...
Click to collapse
I did a quick format on the computer, Fat32, then I formatted it in my HTC Evo 4g LTE because thats how I was able to get it to mount/read originally in my unrooted/unmodded tablet. It works on my phone no prob. As for the other questions, I think i worded my problem kind of wrong, because I wasnt trying to do any fancy kind of partitioning; i just want my sd card to work. Sorry for any confusion
EDIT!!:
So the plot thickens! After a random reboot, I was able to get the tablet to recognize the card...and then when I powered it down and backup, it lost it. It seems it randomly recognizes the card after a reboot(but not all the time). UGH!

prpitbull9 said:
I did a quick format on the computer, Fat32, then I formatted it in my HTC Evo 4g LTE because thats how I was able to get it to mount/read originally in my unrooted/unmodded tablet. It works on my phone no prob. As for the other questions, I think i worded my problem kind of wrong, because I wasnt trying to do any fancy kind of partitioning; i just want my sd card to work. Sorry for any confusion
EDIT!!:
So the plot thickens! After a random reboot, I was able to get the tablet to recognize the card...and then when I powered it down and backup, it lost it. It seems it randomly recognizes the card after a reboot(but not all the time). UGH!
Click to expand...
Click to collapse
It should work fine in cm10.1, the issue was just resolved according to some users. Test and see
Sent from my Galaxy Nexus using xda app-developers app

dasunsrule32 said:
It should work fine in cm10.1, the issue was just resolved according to some users. Test and see
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
do you know which build?

[Q] SD card just died

I've had a 32 gig micro SD in my phone for a while now. I recently took my Siii out of my pocket only to find that it says the SD is unmounted. Odd, but not unheard of in the world of custom roms (paranoidkangdroid 2.something, rather recent though, 4.2.2 JB) So i do the sensible thing: Run into the storage menu, and lo and behold, its not registering. I pop it out and in, not registering. I reboot, and the damn thing still isn't registering. Then I take an old 2 GB micro SD and try it. This one worked just fine. 32 gig however does not. I move to my PC. Pop it in a micro to regular SD adapter, and the computer doesn't mount it. It does mount every other microSD of mine though. So can anyone tell me what the hell happened, and how I can recover my stuff?

Actually you can't, your sd card is corrupted and it's known to happen with this device that's why I always keep a weekly backup on my computer with everything. Especially the ones ordered from amazon the high capacity ones as far as I've seen.
Sent from my SCH-I535 using Tapatalk 2

Addiso said:
Actually you can't, your sd card is corrupted and it's known to happen with this device that's why I always keep a weekly backup on my computer with everything. Especially the ones ordered from amazon the high capacity ones as far as I've seen.
Sent from my SCH-I535 using Tapatalk 2
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Well ****. I guess you're right, it just showed as unsupported file format.

nrock2256 said:
Well ****. I guess you're right, it just showed as unsupported file format.
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Click to collapse
Yeah I had actually a 16 gb one die on me, ordered me a 32- one and has been running good so far..
Sent from my SCH-I535 using Tapatalk 2

Addiso said:
Yeah I had actually a 16 gb one die on me, ordered me a 32- one and has been running good so far..
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
And now its not. This is frustrating. I don't want to spend money on a new card dammit.

Try booting a linux live cd and see if you can save anything, thats how I recover deleted tomtom maps in the past.
Sent from my SCH-I535 using xda app-developers app

Please read forum rules before posting
Questions and help issues go in Q&A
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Addiso said:
Actually you can't, your sd card is corrupted and it's known to happen with this device that's why I always keep a weekly backup on my computer with everything. Especially the ones ordered from amazon the high capacity ones as far as I've seen.
Click to expand...
Click to collapse
Is the SD card damaged or can it just be reformatted with a card reader on a PC (fat I am assuming)?
I was about to start using an SD card to backup the internal storage. It doesn't sound like this is the best option and backing it to my PC would be better.

My set up to start was cleanrom 6.2 with envy kernel running fine for a week. I had my sd card disappear today twice. PNY class 10 32gb less than 2 weeks old from best buy. Popped it in my pc and it was recognized no problem. So I transferred my data, formatted in fat 32 popped it in phone, no problem. Transferred data back and was Ok for a few hours. Swapped my battery for a freshly charged one and upon boot, phone said the card was damaged, to reformat it. So, I pulled it out and popped it in my pc. Pc said card was damaged. I opened a command prompt and ran a chkdsk /f and it fixed an issue with the file system. I then proceeded to restore my cleanrom 6.2 backup. So far so good. I am thinking it had to do with an app, but I can't be sure. Upon googling this, it seems that some people have had an issue with external sd cards with this phone.
Sent from my ASUS Transformer Pad TF300T using xda premium

nrock2256 said:
I've had a 32 gig micro SD in my phone for a while now. I recently took my Siii out of my pocket only to find that it says the SD is unmounted. Odd, but not unheard of in the world of custom roms (paranoidkangdroid 2.something, rather recent though, 4.2.2 JB) So i do the sensible thing: Run into the storage menu, and lo and behold, its not registering. I pop it out and in, not registering. I reboot, and the damn thing still isn't registering. Then I take an old 2 GB micro SD and try it. This one worked just fine. 32 gig however does not. I move to my PC. Pop it in a micro to regular SD adapter, and the computer doesn't mount it. It does mount every other microSD of mine though. So can anyone tell me what the hell happened, and how I can recover my stuff?
Click to expand...
Click to collapse
I'm not sure exactly what brand or model you have for your SD card or when you purchase it. However if its a SanDisk and it was purchased before December 2012 there's a chance that it was part of a bad batch. I had the exact same problem with mine I have a UHs 1 32 gig SanDisk. I read somewhere on the internet that there is a known problem with SD cards from that company built before December. When I spoke with SanDisk they confirm that and said the newer batches have been corrected. Long story short if you're using an ultra high speed or for that matter any card by SanDisk call up there customer service explain to them the problem and they will send you a brand new one. The entire process took about a week for me.
Sent from a Shaftamle Galaxy S3
Please hit the "Thanks" button if I helped you!

Did you try my suggestion? Ive recovered numerous files using a linux live cd and/or a mac. Try putting the card in a network printer or mem card reader if linux and mac os isnt possible. Ive recovered my files, including those from a 16gb micro sd card, using those methods in the past.

Okay, so it works
Alright alright, i didn't expect this to get many responses. Anyway, it now works. It appeared to be fried, my mac, PC, ubuntu machine, and OG droid wouldn't even recognize that a card was inserted. Nor would my GS3. My solution? after turning it on and off a few times, I just left the card in it and set it aside for an hour. Lo and behold, it now works. The SD now works. It was fried, and is now unfried. I don't know how, I just guess I am lucky. Or aliens. Either way, I am happy. Not gonna jeep anything more than music on it though... Ah well, thanks for the help XDA!

If I were you, I'd back up everything on that card to my pc, and exchange it if under warranty. If not, chuck it, and purchase another card.
Not worth taking the risk again.
Consider yourself lucky so far

nrock2256 said:
I've had a 32 gig micro SD in my phone for a while now. I recently took my Siii out of my pocket only to find that it says the SD is unmounted. Odd, but not unheard of in the world of custom roms (paranoidkangdroid 2.something, rather recent though, 4.2.2 JB) So i do the sensible thing: Run into the storage menu, and lo and behold, its not registering. I pop it out and in, not registering. I reboot, and the damn thing still isn't registering. Then I take an old 2 GB micro SD and try it. This one worked just fine. 32 gig however does not. I move to my PC. Pop it in a micro to regular SD adapter, and the computer doesn't mount it. It does mount every other microSD of mine though. So can anyone tell me what the hell happened, and how I can recover my stuff?
Click to expand...
Click to collapse
So I have had my sd card corrupt a few times now, so far this has seemed to help me recover my data.
http://www.cgsecurity.org/wiki/TestDisk_Download

The problem could be a sandisk SD card:
(Outside link) crave.cnet.co.uk/mobiles/samsung-galaxy-s3-fault-is-caused-by-sandisk-memory-cards-50010684/
I read about the SD problems after just getting the S3.. decided to get a different brand card from the store.

[Q] 32 gig SD card dead?

Hey guys, would appreciate if someone could give me some help on an issue I'm having with a 32 gig SD card (SanDisk Class 10 bought at Best Buy so it's definitely legit). Anyway it worked great for a long time, however, recently I tried to use the Gremlin Remover on my phone, it crashed and burned in the middle of the process as I've heard can often happen with Gremlin Remover. I did a restart, and after that problems began to appear with my SD card. Almost all the data on it disappeared and it started to constantly mount and dismount from the phone. I thought it might have just been the failed Gremlin Remover run, so I reformatted it in Windows, put Gremlin Remover, black hole system wipe, and my ROM back on and did a complete wipe and restore of the phone, card seemed to be working okay, but then the next day it started dismounting and saying it had been unexpectedly disconnected again. Now I can't get the phone to recognize it at all so I can't connect it to Windows to get it formatted. The strange thing is that my tablet (Asus Transformer TF300) can mount the card and read the data on it. However I can't reformat from the Asus since it won't mount as USB storage in Windows. Is it probable that the card is completely fried? Or does it maybe just need a good reformat? If a reformat would fix it, how would I go about doing it? Is it possible to reformat through terminal commands? Or some other way? Anyway thanks in advance for any help.

I too have a Sandisk class 10 uSD card that just recently failed on me. It started losing files one night, then it stopped mounting. Now it just shows up as a 30-something MB drive that I can't format. I have tried many methods of restoring it to no avail.

Maybe try to format it using external sd card reader? microsd to sd?

I think there's a known issue with these cards. I bought one of these a couple wks ago from a deal posted on slickdeals.
I haven't had any problems with mine but after the purchase I started reading comments in the thread about how these cards are known for mount/dismount trouble and high failure rates. I believe in still under my return period with Amazon so I've been debating exchanging it for a different brand like Samsung. Sorry, I'm at work posting on my phone so I can't post a link.
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theprogram1 said:
Maybe try to format it using external sd card reader? microsd to sd?
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This has already been tried, without any luck. I tried to format via Disk Utility on Mac OS, numerous drives tools under Windows, and gdisk under Ubuntu, and nothing will revive it. Zed's dead.
Chitown021 said:
I think there's a known issue with these cards. I bought one of these a couple wks ago from a deal posted on slickdeals.
I haven't had any problems with mine but after the purchase I started reading comments in the thread about how these cards are known for mount/dismount trouble and high failure rates. I believe in still under my return period with Amazon so I've been debating exchanging it for a different brand like Samsung. Sorry, I'm at work posting on my phone so I can't post a link.
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I too saw a number of reviews that noted the same type of failure, so I may end up giving another brand (like Samsung, as you suggested) my business. Sandisk does not seem to want to take any responsibility for my uSD card failing after only 8 months of normal use.

namaui said:
I too have a Sandisk class 10 uSD card that just recently failed on me. It started losing files one night, then it stopped mounting. Now it just shows up as a 30-something MB drive that I can't format. I have tried many methods of restoring it to no avail.
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Same thing happened to me when I tried to format. Been meaning to thank you guys for all the comments, good to know it's not just me. Anyone have luck with RMA's?