Develop Bugs

SD card unexpectedly removed...

So I have searched for this error and no one seems to have an answer that fits my problem. I got an error after booting that stated SD card unexpectedly removed and gave me a triangle with an exclamation point in the center
the card works fine
it will mount up perfectly from recovery, i even pushed several roms to it and tried (cyanogen, RR, and SkyRaider) all three worked beautifully, but as soon as I boot up BAM "SD card unexpectedly removed" and I can't access anything
the computer reads it just fine so I am pretty sure there is nothing wrong with the card, also with it reading in recovery it seems there is nothing wrong with the phone
is this a problem with ROMs?
I could try to do a factory reset and see if that works... but its really annoying :\
any help?

I would try reformatting the card on your PC. The card may have a bad sector that the PC and Recovery ignore. The phone OS tends to be a little more picky about those sort of things.

bigslam123 said:
I would try reformatting the card on your PC. The card may have a bad sector that the PC and Recovery ignore. The phone OS tends to be a little more picky about those sort of things.
Click to expand...
Click to collapse
This worked
Thank you, I am running good now
I noticed when I was trying to backup my SD card (pictures and whatnot) that some of the files were corrupt
I will make sure I keep a regular backup just in case its a sign of the card going bad
good thing is my titanium backups were all perfect

eyeheartmozart said:
This worked
Thank you, I am running good now
I noticed when I was trying to backup my SD card (pictures and whatnot) that some of the files were corrupt
I will make sure I keep a regular backup just in case its a sign of the card going bad
good thing is my titanium backups were all perfect
Click to expand...
Click to collapse
You are on the right path - don't forget, a good practice is to back up your SD card to your PC regularly.
Why? If (when really) the SD goes wonky, you have a PC backup of the card, and you can get another SD, format it on the PC, load the backups you made, and be back in business in short order.

smtom said:
You are on the right path - don't forget, a good practice is to back up your SD card to your PC regularly.
Why? If (when really) the SD goes wonky, you have a PC backup of the card, and you can get another SD, format it on the PC, load the backups you made, and be back in business in short order.
Click to expand...
Click to collapse
yeah, fortunately I had done this about a month ago
I lost a few pictures that I took recently but overall it wasnt a big loss
I will def be doing this more frequently

Same problem with a twist
I receive the same error only i can't get anything to read the card after it happens. Any help would be appreciated.

Gilead said:
I receive the same error only i can't get anything to read the card after it happens. Any help would be appreciated.
Click to expand...
Click to collapse
My solution was to format and start over, that was the only thing that worked for me

I've gotten this a few times and it is a PITA because it resets all the notification sounds and also the phone reboots. Once it does it, the only way I can get it to work is to remove the card, put it in the PC, let Win7 do a fix and repair errors and then it will work. I tried removing and reinserting, and it would mount the card and immediately give me the 'sd card unexpectedly removed' message.
I tried reformatting, and the sd card worked for a while and then I got the 'unexpectedly removed" message again after a few days. The last time it gave me that message, I just did the repair errors thing again and it's been working without fail for about 4 days now. It seems like it's going to be an ongoing thing though.
I've been googling like a mad person trying to find a real fix for this. I saw a thread on Android central where they guy said he put his wife's card in his phone and it did the same thing; but worked fine in hers. He mentioned it might be related to the 2.2 OTA update. My problem did start after that update.
In another forum thread, someone posted that they bought a new card, and it gave them the same message. So it doesn't appear to be a bad card; which is what I originally thought. I'd hate to buy a new one and have same issue (i have a 16gb card currently).
(sorry for long post)

I have the same problem! I'm using a Verizon HTC Droid Incredible 2. Previously i've been running Froyo 2.2 over the phone with a 16 GB microSD Card without problem. Later i've been using a 2 GB microSD Card and works fine, but now i'm runnin' Gingerbread ROM From verizon with 16 GB microSD Card and the messages "SD Card unexpectedly removed" don't stop.... the card works fine over other phones... even the stereo of my car can read perfectly the card's content.
I don't know if this is a problem with the update or what????
I don't think in the versions of "Bad sectors" because i check everthing and the problem persist.
The problem appears when i'm playing music... later of that the problem appears at the camera, the file explorer or another app that tries to read the SD Card.
I reboot the phone and works fine but after a couple of minutes the same [email protected]$%&t appears again....
I'm tired of reading forums telling me that is a problem with the sectors... that is a LIE!
no matters the class of the card because i've tried with Class 2, Class 4 and works fine.
This night i'll go to the store that solds me that coursed card to change it!
if tomorrow my problem was solved i been writing at this same forum!

daniel_irias said:
I'm tired of reading forums telling me that is a problem with the sectors... that is a LIE!
Click to expand...
Click to collapse
I do not think someone saying it is bad sectors means they are lying.
I think they are merely trying to help you determine what the problem could possibly be.
Sent from my Incredible Sensation 3D using Tapatalk

daniel_irias said:
I have the same problem! I'm using a Verizon HTC Droid Incredible 2. Previously i've been running Froyo 2.2 over the phone with a 16 GB microSD Card without problem. Later i've been using a 2 GB microSD Card and works fine, but now i'm runnin' Gingerbread ROM From verizon with 16 GB microSD Card and the messages "SD Card unexpectedly removed" don't stop.... the card works fine over other phones... even the stereo of my car can read perfectly the card's content.
I don't know if this is a problem with the update or what????
I don't think in the versions of "Bad sectors" because i check everthing and the problem persist.
The problem appears when i'm playing music... later of that the problem appears at the camera, the file explorer or another app that tries to read the SD Card.
I reboot the phone and works fine but after a couple of minutes the same [email protected]$%&t appears again....
I'm tired of reading forums telling me that is a problem with the sectors... that is a LIE!
no matters the class of the card because i've tried with Class 2, Class 4 and works fine.
This night i'll go to the store that solds me that coursed card to change it!
if tomorrow my problem was solved i been writing at this same forum!
Click to expand...
Click to collapse
did you format the card and try again as suggested earlier? That usually clears up any issues with sd cards unless they're fubar'd. Just make sure you back your card up first.

Whenever my card does this I put it into my Windows computer, right click on the card and go to properties/tools/error checking/ and check both boxes and let it run. It fixes my issues every time without formatting the card.

I had that problem a while back with one of Verizon's updates after 2.2. Reformatted card. worked fine in other phones but still said same thing everytine I put it back in the dinc. Ended up getting a new SD card then all was fine.
Sent from my ADR6400L using xda premium

If you have an ext extension on your sd use G-Parted (google it) to format your ext2/3/4 partition.

32gb sd... Help?! [FIXED]

Hi, so today every time i would boot up my phone i noticed it took a really long time to recognize the SD card (32 GB SanDisk class 4 micro SDHC). Later in the day, aka a few hours ago, I rebooted my phone and it flat wont recognize the card is there. I've tried formatting through my computer, still didn't recognize the card was there. I tried formatting through cwm 5.5.x recovery and all i get is an error saying it cannot mount the SD. The only time i could even get it to recognize the card it said it was either blank or written in an unreadable filesystem, so i clicked format, but it seems not to format the card. I tried popping in a blank 4GB (micro SDHC class 4) i had laying around, and it worked no problem.
PLEASE HELP!!! I cannot fit my 14GB of Music on my tiny 4BG SD!!!
Thank you to anyone who responds in advance
!!!! Update!!!!!
Fixed!
I used the format SD program in the link provided by 216Monster below.
This program takes hours (I did a full format) but it works!
Please don't be afraid to hit the thanks button!

idiotzach15 said:
Hi, so today every time i would boot up my phone i noticed it took a really long time to recognize the SD card (32 GB SanDisk class 4 micro SDHC). Later in the day, aka a few hours ago, I rebooted my phone and it flat wont recognize the card is there. I've tried formatting through my computer, still didn't recognize the card was there. I tried formatting through cwm 5.5.x recovery and all i get is an error saying it cannot mount the SD. The only time i could even get it to recognize the card it said it was either blank or written in an unreadable filesystem, so i clicked format, but it seems not to format the card. I tried popping in a blank 4GB (micro SDHC class 4) i had laying around, and it worked no problem.
PLEASE HELP!!! I cannot fit my 14GB of Music on my tiny 4BG SD!!!
Thank you to anyone who responds in advance
Click to expand...
Click to collapse
Download SD Formatter from https://www.sdcard.org/downloads/formatter_3/ and see if that works for you, might end up with the same results.
Also did you try sd card in something other then your phone to make sure its not faulty?

216Monster said:
Download SD Formatter ...
Also did you try sd card in something other then your phone to make sure its not faulty?
Click to expand...
Click to collapse
Yes. luckily i found a 16gig card i had, which is working. but i will try that formatter now, thank you
Edit: sorry read that wrong.. but the case works fine in all my computers...but I tried another Android and it failed to work there also

I had the same problem with 2 16gb sandisk sdcards, never really figured out why it did that but every other brand works fine no problem at all
Sent from my R800a using XDA App

Another thing you could try is a sd card from samsung, im using a 32gb class 10 in my r800x and it works great!
http://www.samsung.com/us/computer/memory-storage/MB-MSBGA/US
http://www.samsung.com/us/computer/memory-storage/MB-MSBGA/US-specs

Pretty sure the class is one of the factors that determine if the SD card will work with your phone. 16 SD here.
Sent from my R800x using xda premium

cj360 said:
Pretty sure the class is one of the factors that determine if the SD card will work with your phone. 16 SD here.
Sent from my R800x using xda premium
Click to expand...
Click to collapse
Well I think all the cards I have are class 4... and the 32 gig card has worked for me for more than half a year
Sent from my R800x using XDA

Hardware failure? I've read a couple other ppl having issues with 32 gb. Kinda why I don't wana plot the money down work one if I don't know its gonna work.
Sent from my R800x using xda premium

idiotzach15 said:
Hi, so today every time i would boot up my phone i noticed it took a really long time to recognize the SD card (32 GB SanDisk class 4 micro SDHC). Later in the day, aka a few hours ago, I rebooted my phone and it flat wont recognize the card is there. I've tried formatting through my computer, still didn't recognize the card was there. I tried formatting through cwm 5.5.x recovery and all i get is an error saying it cannot mount the SD. The only time i could even get it to recognize the card it said it was either blank or written in an unreadable filesystem, so i clicked format, but it seems not to format the card. I tried popping in a blank 4GB (micro SDHC class 4) i had laying around, and it worked no problem.
PLEASE HELP!!! I cannot fit my 14GB of Music on my tiny 4BG SD!!!
Thank you to anyone who responds in advance
!!!! Update!!!!!
Fixed!
I used the format SD program in the link provided by 216Monster below.
This program takes hours (I did a full format) but it works!
Please don't be afraid to hit the thanks button!
Click to expand...
Click to collapse
Can you post detailed information on how you did it? Override? Did you marked format size?

32gb microsd SDHC problem!!

Hi,
I bought a trancend 32gb microsd SDHC class4 card for the note about 10 days back..Worked fine for 2 days then suddenly stopped working...Stopped working means does not get detected in the phone or on the laptop (there is no option for mount/unmount on the phone)..Ive tried my older 8gb card on my phone and that works fine..Ive also tried the screwed up card on my blackberry bold and it doesnt detect there as well..
Well, i thought its the card's fault and ordered a replacement...
They sent one and same story again!! worked for 2 days and same thing again
Now i dont know if its the card's problem or my phone's..Anybody with any idea??
PS - i am rooted and on criskelo v11.2 with speedmod 3-13 if it matters...also both times i had about 15gb of data in the card...
ive also tried blowing and cleaning the contacts..also tried inserting a piece of paper in the slot to cancel out loose contacts but nothing works
Thanks..

What was the file system on the card?

SolteRR said:
What was the file system on the card?
Click to expand...
Click to collapse
err..i dont remember
i formatted it using the phone before putting in files..so whatever the phone formats it as was there...
are there specifications to follow??

Very strange problem , but I am facing the same problem with a Trancend 32 GB card replaced twice and worked only for 1 day and then stopped recognising , not sure if it makes a diff the Mobo was replaced by Service center about 4 months back ,, may be a mobo fault? but my 16GB card just works fine

same thing happened to me also ..... i replaced a new 32g card let me see if it works fine or i will never buy another 32gb trancend card

since both r indians ill talk in tat context
flipkart now says they wont replace anymore and will refund the amount as credit! He also adviced that sandisk works better on the note for this capacity..i dont know wat logic he had! please do update if u find a solution/alternate
@anirudh - which company is that 16gb from? maybe ill have to make do with 16gb since 32 doesnt work

32Gb micro SDHC class 4 by Transcend, not recognised by GT N7000
Hi All,
I'm using a GT N7000 on Official 4.1.2 XXLT5 (recently updated). I'm using a Transcend microsd 32gb class 4 for about a year now with this note. But I'm facing this issue of 'blank SD' and 'unable to format' from 2-3 months now after I updated to one of the official OS upgrade.
I've tried reverting back to all the earlier versions of Android where it worked fine, but there seems to be no change. I can read the card using an external card reader in my laptop, but not through the phone.
I've tried formatting it to all the possible types (NTFS, exFAT, FAT32), nothing seems to work, for the note. I can read it on PC though.
I tried reading the same card in another device, but now it's not readable in that as well. Any suggestion/solution, much appreciated.
Thanks
Baahu

Baahubali said:
Hi All,
I'm using a GT N7000 on Official 4.1.2 XXLT5 (recently updated). I'm using a Transcend microsd 32gb class 4 for about a year now with this note. But I'm facing this issue of 'blank SD' and 'unable to format' from 2-3 months now after I updated to one of the official OS upgrade.
I've tried reverting back to all the earlier versions of Android where it worked fine, but there seems to be no change. I can read the card using an external card reader in my laptop, but not through the phone.
I've tried formatting it to all the possible types (NTFS, exFAT, FAT32), nothing seems to work, for the note. I can read it on PC though.
I tried reading the same card in another device, but now it's not readable in that as well. Any suggestion/solution, much appreciated.
Thanks
Baahu
Click to expand...
Click to collapse
Boot into recovery mode and go to mounts and storage. From there format the external memory card (format /sdcard). Alternatively you could try with a format from the "storage" in settings.

Use the card reader with ur pc. Go to disk management and format the card FAT32. Before formating, delete the partition/partitions on ur card. U should get unallocated space. Create partition and it should work. The big problem is that u may see some problems between note and 32gb card. The phone it may restart and u should go to recovery/download mode to restart it... good luck.
Sent from my GT-N7000 using xda premium

S4 Won't read Sd card

I am stumped! I got a Sandisk 64gb sd card for this. Naturally, it came formatted as exfat. From stock through 3 different CM based ROMs, I can't get this S4 to read the SD card. I even downloaded a partition manager to format it to Fat32. I also wiped it and let the phone format it. Even after that it would read it. I know CM now supports exFat format. I even flashed separately the script from the original thread. In any case my laptop has no problem with the sd card. Any help appreciated.

I have a Patriot 32 gb class 10 that was working fine until s couple of days ago. Then the phone said sd card unexpectedly removed. Pulled battery and card nothing. Did a format still nothing put that card in my Asus transformer tablet. read just fine took the card thatvi had in my tablet without formatting it put it in my s4 and it read it. this is my 4th galaxy device they should have figured this out by now. Any suggestions.
Sent from my SGH-M919 using xda premium

same happened with my 32gb on my note2 and now in my gs4
tapatalk on android

The sudden unmounting and/or sd card not being recognized by the S4 and other devices as mentioned is a known issue that is usually SD card related. Sometimes it's just a matter of reformatting your card to Fat32 if your ROM cannot read exFAT cards.
But if that's not your issue or you already reformatted your card to the appropriate format, the SD card has failed and warranty/replacement is suggested.
Can happen to SanDisk cards in addition to other manufacturers.
You may hear this issue being associated to SanDisk cards if only because they are probably the most counterfeited card out in the market. But the issue can occur to non counterfeit cards also.
To reduce your chances of having theses issues happen, always get your cards from reputable sources, in blister original packaging, etc. And if the price looks too good to be true, it most likely is. Even if you take the above precautions, you can still have issues.
Always back up your data for that 'Just in case moment' in case stuff happens.
Purchasing a card whose Manufacturer and/or Seller has an excellent return/exchange policy is a plus.
Having a spare SD card available can help you troubleshoot what your issue may be regarding a defective card, formatting issue, device issue, etc.

You may want to take a look at this thread, as it may help you out:
http://forum.xda-developers.com/showthread.php?t=2041679

I started to reply to you but my laptop crashed. Seems this s4 just doesn't like that 64gb sandisk. I had an 8gb card laying around and that worked like a charm. The sandisk was foramted exfat out of the box. I formated fat32 and didn't work. I wiped it and left it without format. Put in the phone to let it format the card. It did--fat32 and then still wouldn't read it or even mount it.
I sure don't have anything to lose by trying a different program to format that card. It could come in handy even if I don't use it in the phone. A camera comes to mind.
Oh yeah, it was easeUS that I used to format the card in the first place. Try something else.
Sent from my SGH-M919 using xda app-developers app

Bowmanspeer said:
I started to reply to you but my laptop crashed. Seems this s4 just doesn't like that 64gb sandisk. I had an 8gb card laying around and that worked like a charm. The sandisk was foramted exfat out of the box. I formated fat32 and didn't work. I wiped it and left it without format. Put in the phone to let it format the card. It did--fat32 and then still wouldn't read it or even mount it.
I sure don't have anything to lose by trying a different program to format that card. It could come in handy even if I don't use it in the phone. A camera comes to mind.
Oh yeah, it was easeUS that I used to format the card in the first place. Try something else.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
Hmmm...
There have been issues with the 64gb SanDisk cards being read by the S4 as well as other devices as described in my previous post, the Ultra cards from what I've read (red & grey) I have the save card, class 10, running without issue on my previous S3 and current S4.
You may want to try the format link above.
You can always purchase another 64GB card on Amazon with a Seller with many, excellent reviews, and go from there, and return what you have to return

Right. That's the very card I have. Thanks for the help.
Sent from my SGH-M919 using xda app-developers app

Bowmanspeer said:
Right. That's the very card I have. Thanks for the help.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
Anytime.
Let me know how it goes

This happen to me but with my galaxy s3...turned out sd card was corrupted. Good news was Patriot replaced it with a new one....

If the SD card didn't work in other devices I would seek to exchange it. There are other things I can use it in. I just ordered a 32 GB G skill on new egg. That should do it. The other thing I tried on this sandisk is partition it to 2 smaller ones less than 30 GB each formatted to fat32. Finally it recognized one of those partitions. When I get the other card I'll swap them.
Sent from my SGH-M919 using xda app-developers app

I had the same problem as you OP. I've also downloaded programs to change the format type and stuff, but nothing worked, but I fixed it in a weird way.
My 64gb card didn't work on my samsung. I used many programs to format the card to get it to work, but nothing. What fixed it was....
I took that card and placed it inside my old smartphone (LG G2X). Once placed inside, a pop-up promoted me saying my card was damaged and it will try to fix it. I've tried this on my samsung and it didn't fix it, but once I tried it on this old smartphone, the card for fixed and started to work on my samsung.
I don't know if this could help you, but that's how I fixed my problem.

Format the card to Fat32.
Sent from Spaceball One.

blackknightavalon said:
Format the card to Fat32.
Sent from Spaceball One.
Click to expand...
Click to collapse
I had tried that already when the device initially wouldn't read the sd card. When I partitioned the card in FAT32 then the device picked it up, but only one partition of 29GB.

Bowmanspeer said:
I had tried that already when the device initially wouldn't read the sd card. When I partitioned the card in FAT32 then the device picked it up, but only one partition of 29GB.
Click to expand...
Click to collapse
I don't know what your problem is, then. My 64GB Sandisk card works perfectly in my Galaxy 4.

I don't know what me problem is either. When I have the time I going to return to stock and start over. TWRP won't backup onto the SD card either. Wondering if its behaving this way because I rooted the phone before putting SD card in. Though I have done complete wipe (including internal memory) prior to installing current ROM.
Sent from my SGH-M919 using xda app-developers app

Galaxy S4
Bowmanspeer said:
I started to reply to you but my laptop crashed. Seems this s4 just doesn't like that 64gb sandisk. I had an 8gb card laying around and that worked like a charm. The sandisk was foramted exfat out of the box. I formated fat32 and didn't work. I wiped it and left it without format. Put in the phone to let it format the card. It did--fat32 and then still wouldn't read it or even mount it.
I sure don't have anything to lose by trying a different program to format that card. It could come in handy even if I don't use it in the phone. A camera comes to mind.
Oh yeah, it was easeUS that I used to format the card in the first place. Try something else.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
I have a SanDisk 64gb micro SD card in my S4, and had it ever since I got the phone about 1.5 years ago. now I am getting the issues you all are getting. I have NOT updated to a new firmware version. and I just backed up and reformatted the card. Very frustrating when all your apps disappear. come to find out they are all being stored on the SD card witch is now not responding... I will try a differect card. I wish they would just leave the phone a lot and stop doing so many updates.. they update one thing it screws up another. Ever since the first update my "Drive" app don't work, and they have no clue why.. not even Samsung knows...
oh well
Laurap6286

Laurap6286 said:
I have a SanDisk 64gb micro SD card in my S4, and had it ever since I got the phone about 1.5 years ago. now I am getting the issues you all are getting. I have NOT updated to a new firmware version. and I just backed up and reformatted the card. Very frustrating when all your apps disappear. come to find out they are all being stored on the SD card witch is now not responding... I will try a differect card. I wish they would just leave the phone a lot and stop doing so many updates.. they update one thing it screws up another. Ever since the first update my "Drive" app don't work, and they have no clue why.. not even Samsung knows...
oh well
Laurap6286
Click to expand...
Click to collapse
Just curious as to how you got an S4, 1.5 years ago? :cyclops:

Odd SD Card Response
I have recently upgraded from a ATT Samsung Express (Tracfone) moving my 32GB SD Card into the brand new Galaxy S4 I Knoxed up right out of the box just as a matter of principle. I saferooted the phone and installed TWRP which for some reason refuses to load after a few succesful tries and a backup of my system and restore thern reload of TWRP. My concern in this question (unless some knight in shining armour can make sense of my TWRP issue) is that I am not able to write to the samsung branded SD card I removed from the old phone. I cannot create a ROM directory on it when the phone is connected to the PC, nor can I copy files to it. I had hoped to preserve the photos on the card and suppose I can break down and buy an adapter so it will connect to my PC but the point is it "should" work,, no? I cannot create a directory when the phone is connected to the PC nor can I in ES file Explorer. I've also tried to create a directory in root witth ES and am getting the same error. I just want to get the silly balloons off m screen and get google play to run. I am succesfully rooted. I've tried to reload TWRP with Odin only to get the small print int he uper right hand of the screen then no further. I am able to restore my backups thank God.
This is making me batty on a three step process. The card is my main concern right now as I can't load the ROM to it once I get TWRP figured out. Thanks in advance for all the great help I always get. The better I get the more I'll contribute....I promise.
's

I'm having the same problem. We are not alone, there are numerous threads in the other S4 forums, like this one http://forum.xda-developers.com/showthread.php?t=2281813&page=14

Suddenly Getting SD Card Unexpectedly Removed Error

Been working fine for over a month now all of a sudden the SD card appears to be randomly mounting/unmounting itself and has become unreadable on my phone.
I've put the SD card in my PC and it works fine so I suspect my phone has developed a fault. I hope I don't have to get an exchange as it's otherwise faultless and I'm dreading getting a unit that can't be S-Off'd
I haven't modified or installed anything prior to the fault developing,
Any tips would be most welcome.
PS It's a genuine Transcend Premium 300x 64GB bought from MyMemory.

stuart0001 said:
Been working fine for over a month now all of a sudden the SD card appears to be randomly mounting/unmounting itself and has become unreadable on my phone.
I've put the SD card in my PC and it works fine so I suspect my phone has developed a fault. I hope I don't have to get an exchange as it's otherwise faultless and I'm dreading getting a unit that can't be S-Off'd
I haven't modified or installed anything prior to the fault developing,
Any tips would be most welcome.
PS It's a genuine Transcend Premium 300x 64GB bought from MyMemory.
Click to expand...
Click to collapse
Is it exfat or fat 32
Sent from my HTC One_M8 using XDA Premium 4 mobile app

Android The Greek said:
Is it exfat or fat 32
Sent from my HTC One_M8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
exfat

stuart0001 said:
Been working fine for over a month now all of a sudden the SD card appears to be randomly mounting/unmounting itself and has become unreadable on my phone.
I've put the SD card in my PC and it works fine so I suspect my phone has developed a fault. I hope I don't have to get an exchange as it's otherwise faultless and I'm dreading getting a unit that can't be S-Off'd
I haven't modified or installed anything prior to the fault developing,
Any tips would be most welcome.
PS It's a genuine Transcend Premium 300x 64GB bought from MyMemory.
Click to expand...
Click to collapse
so are you on stock? if so have you tried a factory reset?

stuart0001 said:
exfat
Click to expand...
Click to collapse
Copy everything off sd card. Convert to fat 32. Copy everything back.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

lukes91 said:
so are you on stock? if so have you tried a factory reset?
Click to expand...
Click to collapse
Stock but rooted and S-Off'd
I've not tried a reset yet but it's been as good as gold until about an hour ago when it suddenly started flashing between "preparing SD card" & "SD card unexpectedly removed"

Android The Greek said:
Copy everything off sd card. Convert to fat 32. Copy everything back.
Sent from my HTC One_M8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I'll give that a go but why has it been working fine for over a month whilst exFAT if that is now the cause?

stuart0001 said:
Stock but rooted and S-Off'd
I've not tried a reset yet but it's been as good as gold until about an hour ago when it suddenly started flashing between "preparing SD card" & "SD card unexpectedly removed"
Click to expand...
Click to collapse
well, a simple solution is to enter recovery and see if the sdcard works there if this way it works, change the rom/perform factory reset, if this doesn't, well, you might try to flash everything again, but i's possible that the sd slot is broken...
i wish you all the luck, let me know

I would copy EVERYTHING off the card to a PC and do a format and try a different file system. I would has perform the format on the phone, to make sure its gets formatted to the correct file systems.
Long story short, It sounds like you memory card is starting to get Corrupted. I have to SanDisk cards that started doing that in the biginning and ended up not being read at all on PC nor the Phone.
Also while its doing that, youll also notice the battery start to drain more, at leasst thats what happended on my Note 3 when I had the san disk cards going corrupt.
Ended up buying new Card and now everything is fine.
I doubt is the card reader built in phone, more then likely its your memory card going corrupt.

hypersonicx said:
I would copy EVERYTHING off the card to a PC and do a format and try a different file system. I would has perform the format on the phone, to make sure its gets formatted to the correct file systems.
Long story short, It sounds like you memory card is starting to get Corrupted. I have to SanDisk cards that started doing that in the biginning and ended up not being read at all on PC nor the Phone.
Also while its doing that, youll also notice the battery start to drain more, at leasst thats what happended on my Note 3 when I had the san disk cards going corrupt.
Ended up buying new Card and now everything is fine.
I doubt is the card reader built in phone, more then likely its your memory card going corrupt.
Click to expand...
Click to collapse
I agree most likely the card. I'd download an sd card format tool and do a full format, don't use Windows format then do full check for bad sectors. I had a similar problem and it was the card at fault, but strangely worked ok on the pc.

stuart0001 said:
I'll give that a go but why has it been working fine for over a month whilst exFAT if that is now the cause?
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Click to collapse
I have been through many a Samsung phones and always had corrupt sd cards in exfat. One day I saw a thread that said convert to fat32 and have never had a problem since.
Sent from my HTC One_M8 using XDA Premium 4 mobile app

Thanks for all the advice.
I could read the card in recovery but it failed to format there.
I tried to format in windows but my only options were NTFS or exFAT, no FAT32. But this failed anyway also.
Downloaded a SD format application but this said the card was write protected and to move the lock switch, obviously MicroSD has no switch like standard SD.
So next I deleted all the files on the card and ran h2testw test. This failed and reported card is probably faulty.
Then I checked the contents of the card again and all the original files were back again, so it's definitely 'Donald Ducked'. I was able to get all my files backed up and fortunately I had my photos already thanks to Dropbox & G+.
So I will now look at getting MyMemory to replace it but my fear is they will want me to return the faulty card but it has sensitive information on it that I can't delete. Any ideas on how I can wipe it?

stuart0001 said:
Thanks for all the advice.
I could read the card in recovery but it failed to format there.
I tried to format in windows but my only options were NTFS or exFAT, no FAT32. But this failed anyway also.
Downloaded a SD format application but this said the card was write protected and to move the lock switch, obviously MicroSD has no switch like standard SD.
So next I deleted all the files on the card and ran h2testw test. This failed and reported card is probably faulty.
Then I checked the contents of the card again and all the original files were back again, so it's definitely 'Donald Ducked'. I was able to get all my files backed up and fortunately I had my photos already thanks to Dropbox & G+.
So I will now look at getting MyMemory to replace it but my fear is they will want me to return the faulty card but it has sensitive information on it that I can't delete. Any ideas on how I can wipe it?
Click to expand...
Click to collapse
How did you attach the card to the pc? Try a usb card reader and then try again. If still problems download mini partition tool (Google) and delete the partition. You can then wipe it properly.

I reformatted the SD card from the settings within the phone and since then it been working fine :\
make sure you're using 2.0USB also..

when i connect my phone to charger
Its been few days i am noticing when i conmect my phone to charger it says 'sd card removed unexpectedly or either it suddenly stops showing content from my phone, then i have to go to settings unmount/mount the sd card frkm storage option and then it shows the content even when charging, or sometjmes it doesn'fshow option for that so on that case i have to restart my phone. What could be the possible reason and solution to that. It was fine on 4.4.4 now i am on 5.0.2 all stock htc one m8 h/k edition with sim unlock and s-off via sunshine.