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[Q] (Help!)(Still Unsolved) SDCard Issues (i9003)

We all know the popular SDCard (MicroSD) issues regarding android...
Yes, I know, this is only my 3rd post... I'm not a noob, I've been reading a lot from XDA since its early beginning... I was a symbian developer during its glory days... I do a lot of android but I am not into developing (yet) for it...
Back to SDCards... I've read a lot of post regarding sdcard problems...
My only concern is that the SDCard automatically mounts itself to read only after some read and write operations... I thought this was normal... But after some research, I found out that it was a sign of corruption... The gradual increase of files in LOST.DIR indicates a serious problem...
To give a more concrete evidence regarding this theory, I started testing with 2 Galaxy SL devices, 2 usb cables and 3 SDCards of different class and capacity... I use 2 Galaxy SL's to identify if my unit has a bad card reader...
These are the test that I've managed to perform:
1. Copy Music Tracks to device via Mass Storage
2. Copy files from Internal SD to External SD via phone
3. Download a large file using the phone and save the file to External SD
4. Delete a large group of files in External SD using phone
The Cards that are use are:
1. SD A (class 2)(4 GB)
2. SD B (class 6)(16 GB)
3. SD C (class 10)(16 GB)
These are the Results:
1. Using Mass Storage to copy Music Tracks to SDCard prove to be successfull (All SD's)
2. Copy files from Internal SD to External... The operation finished but after the operation, the sdcard was mounted as read only (SD B and SD A)
3. Downloading a file to SDCard... There are some instances that the download will fail because the SDCard was mounted as Read Only during the progress of downloading (All SD's)
4. There are some instances that Deletion of file suddenly stops... The reason, the SDCard was mounted Read only...
5. Every Instance of an error, a file is created at LOST.DIR (After the filesystem check at boot)
I check all SDCards to look into its integrity (via CHKDSK /R)... All SDCard diagnostic tools found no problem regarding the Cards... I put the same ROM on the phones (Rooted and Deodexed Stock KPQ) and both phones share the same results above... Recently, this problems persist in all the ROM's that I have tried (CM, MIUI, Stock) And all kernels (UC, Vurrut)... I think finding for a solution for our device first would help us create a solution for others too...
Anyone of you having similar issues...? Your solution and comments is highly appreciated... Many people are having these problems... Making data reliability on the SDCards quite frustating...
Is there a way to "permanently" mount SDCard as RW to prevent it from mounting as Read Only... I really hope that there is a solution to this problem...

Hi, I know it's been a moment but I'll share what I've experienced, my sdcard was supposed to be a 32GB one but in reality it was a 4GB one, you can't see it on windows through, lot of files were appearing in that lost.folder once I exceed 4GB and all my MP3 were getting mixed up, corrupted.
The funny part of this is that all steps trying to verify that sdcard (chkdsk) were showing no problem at all, now I bought a real 32GB from Samsung and it works fine
Your sdcard should be corrupted or just a fake one.
From my side I ain't getting any problem concerning the fact that my sdcard mounts itself as R/O
Sent from my GT-I9003 using XDA

i dont know i have a class6 16-gig sd card and now i have the phone for a motherboard fix. they said that my 16 gig sd card were one of the culprits of the motherboard and usb storage (internal memory) excommunication of my galaxy sl. they prefer that i should use a 4 gig or lower sd card to lessen chances of this to happen again.

that's very strange... how can a sdcard "destroy" the phones motherboard...?

landono5 said:
that's very strange... how can a sdcard "destroy" the phones motherboard...?
Click to expand...
Click to collapse
Yes I'm wondering that. Now I'm just scared of what may happen to my phone
Cheers
Sent from my GT-i9003 powered by Stable and Smooth CyanogenMod 9!

bscraze said:
Yes I'm wondering that. Now I'm just scared of what may happen to my phone
Cheers
Click to expand...
Click to collapse
How shall that work? The only thing I could think of is that a device can not handle SDHC, SDXC cards and thus throws a error like "card corrupted", "no sd card", "card not compatible" but break the motherboard?
P.S. Why don't you insert the banner as to your signature in the user cp? Would prevent others to "quote" it.
The interesting thing is that I never had any problems with my cards, neither with my old 4GB class 4-6 or the new 16GB class 10. Also with the situations you mentioned. But now I know a bit better for what this strange LOST.DIR filder is... For me it's empty all the time.

Taraen said:
How shall that work? The only thing I could think of is that a device can not handle SDHC, SDXC cards and thus throws a error like "card corrupted", "no sd card", "card not compatible" but break the motherboard?
P.S. Why don't you insert the banner as to your signature in the user cp? Would prevent others to "quote" it.
The interesting thing is that I never had any problems with my cards, neither with my old 4GB class 4-6 or the new 16GB class 10. Also with the situations you mentioned. But now I know a bit better for what this strange LOST.DIR filder is... For me it's empty all the time.
Click to expand...
Click to collapse
It is in my signature, just that signatures from the app just add it behind your post, and is not really your signature
Cheers
Sent from my GT-i9003 powered by Stable and Smooth CyanogenMod 9!

That's why I wrote "In the user cp"
Sent from my GT-I9003 using XDA

Taraen said:
That's why I wrote "In the user cp"
Sent from my GT-I9003 using XDA
Click to expand...
Click to collapse
Ah yes sorry I misread
Cheers
Sent from my GT-i9003 powered by Stable and Smooth CyanogenMod 9!

Taraen said:
How shall that work? The only thing I could think of is that a device can not handle SDHC, SDXC cards and thus throws a error like "card corrupted", "no sd card", "card not compatible" but break the motherboard?
P.S. Why don't you insert the banner as to your signature in the user cp? Would prevent others to "quote" it.
The interesting thing is that I never had any problems with my cards, neither with my old 4GB class 4-6 or the new 16GB class 10. Also with the situations you mentioned. But now I know a bit better for what this strange LOST.DIR filder is... For me it's empty all the time.
Click to expand...
Click to collapse
Would you suggest that the phone is the one with problems..? Or maybe the possibility that both of my cards are bad...
Btw.. Can you change the mount of your sdcard using root explorer (r/w and r/o)..?
After formatting my card, the button to mount the sd to read only is gone, but after some time it returns.. Allowing you to mount the sd to r/w or r/o... I think that contributes to my problem

landono5 said:
Would you suggest that the phone is the one with problems..? Or maybe the possibility that both of my cards are bad...
Btw.. Can you change the mount of your sdcard using root explorer (r/w and r/o)..?
After formatting my card, the button to mount the sd to read only is gone, but after some time it returns.. Allowing you to mount the sd to r/w or r/o... I think that contributes to my problem
Click to expand...
Click to collapse
Not really, I only wanted to say that I never had such problems.
Mounting works, I have done it on my computer, but that won't make any difference:
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Taraen said:
Not really, I only wanted to say that I never had such problems.
Mounting works, I have done it on my computer, but that won't make any difference:
Click to expand...
Click to collapse
Do you know a way to forcefully mount the card to r/w only..? In a way that the card cannot be mounted as r/o...

Sorry but this is a question I can't answer. I'm not a developer, but I don't think that there is some kind of "permanent" mount.

Samsung Galaxy SL SD card issues
I'm having the same problem. At first I thought it was the native music player because the problem would happen a few minutes after I'd pause music. The phone would restart on it's own, wipe the files on the SD card then restart. I downloaded another music player to try to correct the problem. It worked for a few days then it happened again. It wiped all the files on the SD card. This time it seemed to be worse. After a few minutes it restarted again, and this time wiped all the programs that were saved on the SD card, and reformatted the phone completely (including language and account settings). I have installed the latest firmware, and tried using the phone without a SIM card and it still happens. I basically have an unusable phone. Please help. I haven't tried replacing the SD card but I'm having doubts whether it's because of the SD card why the problem is happening. I used to own a Samsung Galaxy S and I used that card on that phone, and it worked fine. If I buy a new SD card, how would I know what kind to get and are there any other fixes to this issue? Please help!

Q) how to format FAT32 64gb card ? can't write/delete files.

Was wondering if anyone had any ideas on what I can possibly do??
The card came as EXFAT, but most roms only support FAT32.
I formatted the card to FAT32 which was fine .. but after copying a few files the card now refuses to write or delete files. I can still open and view media that's on it but that's about it. I can't even re-format it, it will say the disk can not be formated or write error. The card isn't corrupt though, I copied around 30gbs of video on it when it was in EXFAT partition before. J
I'm using an SD adaptor into my card reader, but yes I have ensured the lock switch is off.
edit - oh also, when you place the card into the phone it'll say that the card is damaged/blank.
Any help would be appreciated
Cheers,

thanhson87 said:
Was wondering if anyone had any ideas on what I can possibly do??
The card came as EXFAT, but most roms only support FAT32.
I formatted the card to FAT32 which was fine .. but after copying a few files the card now refuses to write or delete files. I can still open and view media that's on it but that's about it. I can't even re-format it, it will say the disk can not be formated or write error. The card isn't corrupt though, I copied around 30gbs of video on it when it was in EXFAT partition before. J
I'm using an SD adaptor into my card reader, but yes I have ensured the lock switch is off.
edit - oh also, when you place the card into the phone it'll say that the card is damaged/blank.
Any help would be appreciated
Cheers,
Click to expand...
Click to collapse
Make sure you format it in the phone

Every time I place the card in, it will say the card is damaged or blank
Then it tries to format it but then goes through the same loop of saying it's damaged/blank

thanhson87 said:
Every time I place the card in, it will say the card is damaged or blank
Then it tries to format it but then goes through the same loop of saying it's damaged/blank
Click to expand...
Click to collapse
unmount SD card before format SD card

ruscan.calin said:
unmount SD card before format SD card
Click to expand...
Click to collapse
alright i'll give it a go soon
cheers

i had experienced the same problem i tried my best using several fomat tools. think almost all the tools in the world....failed and bought a new one.....think its better go for new card

Did you try to format it on Linux? I've experienced some problems with SD cards formated on Windows (assuming that you run Windows )

vjz567 said:
i had experienced the same problem i tried my best using several fomat tools. think almost all the tools in the world....failed and bought a new one.....think its better go for new card
Click to expand...
Click to collapse
pretty much - there's nothing you can do. I decided to email Sandisk and here's their response:
I understand that the error that appear after format is “write protected”. First we would like to apologize for the inconvenience.
I understand that you are getting write protection error while accessing the flash drive. The flash drive has detected a potential fault and become “write protected” to prevent data loss. There is no method to fix this. You will need to back-up your data and replace the flash drive.
So you have to RMA it. I'm abit confused because others on XDA have successfully covnerted their 64gb cards to FAT32 without any issues.
Could it be a faulty batch of sd cards?.

[Q] external sd card problem

hi guy's!
i have a Galaxy Ace GT-S5730i
and i was having some problems with the internal storage
so i saw this thread by jocala
http://forum.xda-developers.com/showthread.php?t=1757767
that i can use the external sd card as an internal storage
any how .. it didn't work!
but what happened now is that my phone can't read the sd card at all
and saying things like "no such as directory" or something like that
and i can't download the swapsd.apk again cause it needs an sd card to be downloaded to first!
if only i can download the apk from any where directly to the internal phone storage
i can get the swap back to default again!
any help please?!
and yes i am a noob!

Take out the SD card and put it into an SD card reader and put that into your computer and use a free partition program to basically repartition the entire card or delete and format a new partition.

didn't work
orangekid said:
Take out the SD card and put it into an SD card reader and put that into your computer and use a free partition program to basically repartition the entire card or delete and format a new partition.
Click to expand...
Click to collapse
hey, thanks for helping
but it didn't work
did what you asked me to do, but nothing really changed!
thanks again
any other ideas?

Strange, formatting the sd card usually fixes these kind of problems :/
Have you tried it a couple times? Formatting does fail on occasions. Also make sure you do a full format, not a quick one
Sent from my LT18i using xda premium

jman2131 said:
Strange, formatting the sd card usually fixes these kind of problems :/
Have you tried it a couple times? Formatting does fail on occasions. Also make sure you do a full format, not a quick one
Sent from my LT18i using xda premium
Click to expand...
Click to collapse
well, the sd card is working probably on the pc with the card reader!
so i guess - just guessing - that the problem is in the device it self!
i formatted the phone it self but it didn't work, and i'm going to go with what you are saying
and i will do a full format
thanks a lot

didn't work, does the FAT,FAT32 and the rest of those stuff matter?!
+
when ever i open "My Files" it says "Your phone does not have SD card inserted" although it is!

take a cloth and clean your SD card area in your phone, also use that canned air stuff and do a quick spray.

[Q] 64gb wont work

Ok, i dont know if this has been posted before but this is my BIG problem. When ever I plug in a 16gb sandisk memory card to my galaxy note 10.1 n8000 it works seamlessly without any problems it shows how much space i have and other options like unmount and the like.
BUT, when I plug in my 64gb sandisk microsdXC it doesn't even mount and the only option i see is mount sd card and when i press on that it shows that sd card can be removed.
I want to know why it is like this. I want to use my 64gb on this and I have already got a replacement for the memory card and i also tried reformatting the cards with exFAT and Fat32. I am at a loss and I don't know where I can find the info to get this fixed. I am begging for anybody to help me with the steps to get this fixed
This is how it looks with the 16gb memory card
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This is how it looks with the 64gb memory card

kennyx13 said:
Ok, i dont know if this has been posted before but this is my BIG problem. When ever I plug in a 16gb sandisk memory card to my galaxy note 10.1 n8000 it works seamlessly without any problems it shows how much space i have and other options like unmount and the like.
BUT, when I plug in my 64gb sandisk microsdXC it doesn't even mount and the only option i see is mount sd card and when i press on that it shows that sd card can be removed.
I want to know why it is like this. I want to use my 64gb on this and I have already got a replacement for the memory card and i also tried reformatting the cards with exFAT and Fat32. I am at a loss and I don't know where I can find the info to get this fixed. I am begging for anybody to help me with the steps to get this fixed
Click to expand...
Click to collapse
This is kinda strange, because i had the same problem with the same card, but found out of the box its exFAT, reformatted to FAT32, now works flawlessly...depending on firmware (i'm on 4.0.4 XXALI3, no exFAT support) even exFAT is said to work finally, don't remember which one actually. Thanx you SAMSUNG, finally acknowledged those cards come with exFAT out of the box...i would try to reformat and make sure it's really FAT32, as not all windows machines seem to produce FAT32 out of the box (I'm on MAC). hope this helps...

my baseband version is N8000UBLG5 4.0.4
I have tried to reformat on my windows 7 alienware laptop. It is really weird. I was worried because I thought that it might be a hardware problem but when i used the 16gb memory card it worked flawlessly. I only used the format option that comes with windows. Could this be a problem with the software? I just hope that this is not a problem with the hardware. I hope someone could shed some light on this for me.

You can't format a 64gb sd card fat32 using window natively, you need another program such as Easius partition manager to do it. This might be your problem....

ultramag69 said:
You can't format a 64gb sd card fat32 using window natively, you need another program such as Easius partition manager to do it. This might be your problem....
Click to expand...
Click to collapse
where do i download this?

Still doesn't work
Ok, I tried using the formating program and still same thing. It wasn't able to fix it. The only option that shows in the storage part is "mount sd card". And still when I click on that, it shows a notification that says that sd card is safe to remove. Im really at a loss here. I guess that because I can use the 16gb memory card, its probably not a hardware problem right? I have the n8000 3g+ wifi model. I don't know what region it is but I bought it at amazon.com

Is the sd card recognised in windows? Can you open up and copy files to/from it?
If you have another phone you could try to format it in that BUT be careful as it can screw them up...

ultramag69 said:
Is the sd card recognised in windows? Can you open up and copy files to/from it?
If you have another phone you could try to format it in that BUT be careful as it can screw them up...
Click to expand...
Click to collapse
yes It is recognized in windows and yes I can copy files on it. I actually tried it on my galaxy s3 phone and it was recognized. That is why im really wondering why this won't work on the n8000...I am hoping to find someone who could fix it, I would gladly pay for the fix if it would be repaired.

kennyx13 said:
yes It is recognized in windows and yes I can copy files on it. I actually tried it on my galaxy s3 phone and it was recognized. That is why im really wondering why this won't work on the n8000...I am hoping to find someone who could fix it, I would gladly pay for the fix if it would be repaired.
Click to expand...
Click to collapse
you could try to format in the S3...mine isn't' available right now,so I can't try myself...not sure if S3 does exFAT though....

If you have access to a Digital Camera and a Micro SD to SD Adapter you could insert the micro sd card in the adapter and then insert both into a Digital Camera and reformat using the cameras format instructions.
Worked for me in the past.

[HELP} problem with sd card

hello, i have a 4gb microsd with my android phone
suddenly one day it stopped allowing me write or delete files from sd card, only read operations are done
normal check with windows failed
i tried to format with gparted and diskpart everything failed,
it doesnt have a lock, tried from usb card reader also
what should i do know??
(did a lot of googling tried many formatters none worked)

Try these:
1. Unmount SD card in your device, and mount it again.
2. Connect it to a PC using a card reader, and run CHKDSK.
3. Format the SD Card in a digital camera or a Nokia phone.

immortalneo said:
Try these:
1. Unmount SD card in your device, and mount it again.
2. Connect it to a PC using a card reader, and run CHKDSK.
3. Format the SD Card in a digital camera or a Nokia phone.
Click to expand...
Click to collapse
didnt work sir anyway thanks

also,i want to know it.

smarthavoc said:
didnt work sir anyway thanks
Click to expand...
Click to collapse
Maybe its time to buy a new SD card.. Which brand was yours?

immortalneo said:
Maybe its time to buy a new SD card.. Which brand was yours?
Click to expand...
Click to collapse
transcend
slready ordered a new one

Did you try other sd card in this phone? My old Android phone can't read the card, and later I found it's the phone's problem.

coolriver said:
Did you try other sd card in this phone? My old Android phone can't read the card, and later I found it's the phone's problem.
Click to expand...
Click to collapse
ya it works, guess sd card has gone wild
i cant format it even in gparted by connecting using a card reader