Develop Bugs

[Q] SD card unexpectedly removed

Using the pre-installed stock Samsung Class 2 micro SDHC 8gb
Constantly getting this error from the DHD:
"SD card unexpectedly removed"
Symptoms:
1) Usually happens after installing / removing apps.
2) Tends to re-boot by itself after "hang" after about 10 seconds
Note the following items:
1) USB Debugging = ON
2) SIM card is fully inserted
3) SDHC card is fully inserted
4) Using stock ROM
5) PC Error Checking (bad sector) = No error
6) Have tried to format the SDHC. Result = same error
Any ideas on how to troubleshoot tis ?
Is the pre-installed SDHC card at fault ?
Thanks

Another thing you can try is to check with another card (New or Old)
If it still does it....then there shud be some problem with the card holder unit or something...get it replaced mate

Had the same issue. Think your SD card is broken. Mine was. Couldn't even get it to work on a pc. Tried a new SD card and the problem was gone. Just got out of the Vodafone store. They replaced the SD card under warranty.
Sent from my Desire HD using XDA App

I've got EXACTLY the same problem. It's bloody crazy!
I read that the phone may not be able to cope, as it's only a class 2 card - but I don't think that is correct, is it?
I've contacted HTC, and they just told me to take it back to the store and ask them to check it out. I'll probably do that in a week or so.

it just happened to me!! randomly. everything was fine and then suddenly it just failed on me. any clue why?

my4000 said:
it just happened to me!! randomly. everything was fine and then suddenly it just failed on me. any clue why?
Click to expand...
Click to collapse
Bundled Samsung SD cards with the latest OTA update are known to fail, search for more info in other threads here to see if you'd qualify for a warranty replacement.
Sent from my Desire HD using XDA App

sengork said:
Bundled Samsung SD cards with the latest OTA update are known to fail, search for more info in other threads here to see if you'd qualify for a warranty replacement.
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
damn, same thing just happend to me, SD card error and thats it, its dead..nothing can read it. just lost pics i took when i went out this weekend :| absolute rubbish
time to search and find the threads you're on about

Been happening to me on the stock Samsung class 2 8gb... anyone encountered any problems changing to a class 4 card?
Sent from my Desire HD using XDA App

when I woke up this morning I couldn't access any of the programs on my sd card (SanDisk 16GB Class 2 SDHC), when I rebooted my desire HD the same thing happened. I tried manually mounting it, rebooting like ten times, inserting, ejecting the card etc, nothing would work.
Can't be the phone just smashed a 16GB card over night :/

YES....!! Gggrrrrr! it just happened to me last night. I rebooted my phone after installing some different Apps throughout the day (as is usual in my Android daily life). then after the phone rebooted about 30-45 seconds later i saw the "SD Card unexpectedly removed", thats strange i thought. Couldn't get past that after about another 4 reboots i removed the SD Card and tried it in a card reader on my PC. similar thing, I could ready the file structure on the WIN PC but then about 30 seconds later the drive disappeared and was no longer available. I then re formatted the card (started the process withing the first 30 seconds) and thought that would fix it. Now neither my WIN PC or Desire can read the card. also tried in Lynx Puppy environment but no go.
I think my 16GB Class 2 card is TOASTED. Was it because it used an Ext4 Partition on the card for the past 7 weeks? I heard some people in the site saying that Ext4 can damage your SD Card...?

Had the same problem - lost all my unbacked-up data. Quite disappointing. Bought a new micro SDHC and hasn't had a problem since.

So it's the SD-Card then?
It's happening to me most of the time and it's really anoying!

Yep time to buy a new one.if your luck and still able to access your old card then get it backed up quick.......before it goes tits up.
Sent with Desire.

Just visited the HTC customer center last week to check on this issue. Seems like its got to do with a bad batch of cards.
They replaced an identical Samsung microsd class 2 8gb card to let me use for a couple of days. Told me that If I was to still encounter the same problem, it could be problems with the card reader chasis, and I'd have to leave the phone with them for a couple of days.
I'm happy to report that I have not had 1 single "SD card removed unexpectedly" since I got the new replacement card.
I highly suggest for people facing the same problem to get their cards replaced by the seller or HTC.
Sent from my Desire HD using XDA App with 5 seconds of battery left

I just have the same problem like yours.
I tried many way and methods, It just can't working fine!!
so I buying another sdhc as sandisk 8G class 4
now I have no problem for two months so far.
I am reasonably to Suspected...
that the problem happends cuz this garbage samsung SDHC!!
Change it now! you'll feel like:[what a wonderful world~]

The "telus" version comes with an 8gig class 4 card but upgraded to a 16gig class 10. No problems either way.
Guess Canada nipped it in the bud

I was going fine with the stock 8Gb card and then I replaced it with a class 10 16Gb card and after about a week it started randomly ejecting. The card worked fine in other devices and can always be read in Windows but I guess it's only time - I have had another card go in the past and it's a real downer.
I'm not convinced it's the card. I've tried uninstalling any suspect apps but it hasn't made much difference.
Formatting the card and replacing all the files kind of works but I have still had one random 'eject' in the last 48hrs since I last formatted.
Actually the problem seems to have started when I re-flashed my current rom - Android_Revolution_HD-4G_4.0_beta4
Wish we could find out what is going on here.

Having the exact sample problem, but with a 16g card that I bought several month ago. I have another 16g card, will swap and see if the problem go.

I had this problem as well
So I formatted the SD Card and had the problem since...
however sometimes, it cant seem to recognise some pictures in the card, so i use SD rescanning app...

Heard someone saying this was caused by an OTA, well I had a warning around 2 days before the SD-Card Un-Mounted saying that the Card was in Read-Me format... anyway 2 days later my SD-Card became un-mounted and then became comepletely useless. I was unable to mount it or anything, going to get my dad to ring up HTC, as we rung my carrier and they said the problem 'had never been reported' which is bull**** as theres enough people here with the problem...

[Q] Troubleshooting- Problem with 2 new 8GB SD cards

Hi guys,
Im running CM 7 on my HTC desire with Go launcher and just upgraded to a new class 4 8gb SD card made by Sandisk.
I got the first one last week and it worked fine for 12 hours, until i started getting force closes and soon enough, the screen turned blank and only the home key buttons lit up at the bottom. I had to do a battery removal restart and the notoification bar said " Preparing SD card". This never went away even after restarting. I then requested the retailer to send me a new card as i thought this one was corrupted. He agreed.
I used my old 2gb card for five days and did not have a problem.
I got the new 8gb card again yesterday and BOOM! 12-14 hours later, im facing the same problem. I ve had to format it through recovery and download everything again. It still hangs, screen blanks out and i have to do a battery removal restart and all my apps have gone. In the settings menu under "manage applications" they only appear as com.appname.xyz and a grey icon
Here is exactly what im doing-
I put the new card in my phone ( without formatting or partitioning) and download the applicatiosn i need from the market. NOTHING ELSE.
Can anyone help me here? Is there something im missing out? Im fed up of restarting my phone every ten minutes and not having any applications.
Thanks

Please use the Q&A Forum for questions Thanks
Moving to Q&A

Did you buy it off ebay?

Well not exactly Ebay but the indian version called Flipkart.
The card sells for around a discount of 50%.. I now understand why.
Do you think this could be a faulty batch of SD cards?

thestig1587 said:
Well not exactly Ebay but the indian version called Flipkart.
The card sells for around a discount of 50%.. I now understand why.
Do you think this could be a faulty batch of SD cards?
Click to expand...
Click to collapse
*sigh*... you buy from a market which sells things at 50% less.... was it REALLY that hard to find out you just got ripped off for fake sd-cards... seriously buy from somewhere reputable.

ok, let me correct myself. Its the Indian equivalent of Amazon. They have a full return policy which i used to return the first faulty 8GB card and continued to face problems with the new replacement. They have offered to take this card back as well and credited the money to my account five minutes ago..My point is all this is a big hassle for something as silly as a card..
My query is still, what could the problem be? DO HTC Desire's have a problem running 8Gb SD cards? This is a class 4 card...
Anything i should be doing before using a new card?

thestig1587 said:
ok, let me correct myself. Its the Indian equivalent of Amazon. They have a full return policy which i used to return the first faulty 8GB card and continued to face problems with the new replacement. They have offered to take this card back as well and credited the money to my account five minutes ago..My point is all this is a big hassle for something as silly as a card..
My query is still, what could the problem be? DO HTC Desire's have a problem running 8Gb SD cards? This is a class 4 card...
Anything i should be doing before using a new card?
Click to expand...
Click to collapse
Okay, so that's not so bad then. As far as I know they don't, before I was using an 8gb Class 6 sandisk, then a 16gb class 6 sandisk and they're fine..
Try buying from somewhere else though, maybe it WAS the seller

SD card?

So I checked my phone this morning, and it says the micro SD card was unmounted. So I reboot, and a little while after, it says it was unmounted again. I rebooted another time, but this time the microSD card wasn't even recognized. I put it into my computer through a Sandisk microSD to SD card adapter, and it's not showing up anymore. Did my phone fry it, or is there any other way to check if it's alive? It's a Sandisk 32gb class 10, and my phone was on Darthstalker, and Deviant kernel. I'm really afraid that $30 just went down the toilet :/

Unlikely that the phone fried it. People will argue the contrary, but SD cards aren't that reliable. Probably time to buy a new one.
I just looked, and it appears that Amazon is no longer selling their brand (AmazonBasics) micro SDs.... I bought a 16GB class 10 for $18 last year. Not sure if they are a rebrand, but worth looking into. They've been pretty reliable so far.

Its like the 50th post about this... Everyone with a true sandisk has been very happy and error free for the most part. Its the people that buy sandisks "on sale" or really cheap from untrusted sites... Sandisks are cloned big time... And they're out there. You probably got a clone...
Sent from my SGH-T999 using Tapatalk 2

steven-026 said:
So I checked my phone this morning, and it says the micro SD card was unmounted. So I reboot, and a little while after, it says it was unmounted again. I rebooted another time, but this time the microSD card wasn't even recognized. I put it into my computer through a Sandisk microSD to SD card adapter, and it's not showing up anymore. Did my phone fry it, or is there any other way to check if it's alive? It's a Sandisk 32gb class 10, and my phone was on Darthstalker, and Deviant kernel. I'm really afraid that $30 just went down the toilet :/
Click to expand...
Click to collapse
Yeah my sandisk 32gb die last month, lucky Amazon let me return it. I order samsung 32gb class 6 to how this goes.
Sent from my SGH-T999 using Tapatalk 2

steven-026 said:
So I checked my phone this morning, and it says the micro SD card was unmounted. So I reboot, and a little while after, it says it was unmounted again. I rebooted another time, but this time the microSD card wasn't even recognized. I put it into my computer through a Sandisk microSD to SD card adapter, and it's not showing up anymore. Did my phone fry it, or is there any other way to check if it's alive? It's a Sandisk 32gb class 10, and my phone was on Darthstalker, and Deviant kernel. I'm really afraid that $30 just went down the toilet :/
Click to expand...
Click to collapse
Personally I have had really good luck with the Sandisk brand. I still have an old 512 MB one that I bought back in 2006 and it still works. I would recommend pulling it out of the phone and making sure all of the contacts are clean and try again. Costs nothing and may solve your problem.
Just the other day, I pulled my 32 GB from my Galaxy S3 and put in my friends phone to swap a file. Although the screen was black on mine, I forgot to completely shut it off. As soon as I reinserted it, it made the sound, and the screen lit up, and mounted immediately. Any manufacturer can have a few duds, but in my experience these Sandisk are pretty reliable. YMMV.

GalaxyS3Guy said:
Its like the 50th post about this... Everyone with a true sandisk has been very happy and error free for the most part. Its the people that buy sandisks "on sale" or really cheap from untrusted sites... Sandisks are cloned big time... And they're out there. You probably got a clone...
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
I ordered it off of Amazon on September 13. The seller profile looks good too. Idk, is there a way to check if it's a clone?

UPDATE (see post#30):SanDisk Ultra 32GB kiss of death? (

For the past 4-5 months, I've been seeing quite a few posts regarding issues with the SanDisk Ultra 32 GB microSDHC Class 10 UHS-1 Memory Card 30MB/s with Adapter SDSDQUA-032G-U46. I bought one back in November 2012... been running it hard for 6 months without incident.. so figured I was one of the lucky SanDisk recipients.... until today! Starting today, every time I wake the phone get the "sdcard mount" message. So loaded "SD Card Monitor" from the Market (screenshot attached) and found that during deep-sleep, it unmounts/mounts/removed/bad-removal/ejects constantly (example: phone slept from 10:04am to 10:22am)...but during wake state, no issues. So I suspect I'm about to experience the SanDisk 32GB Ultra kiss of death any day now. Backed up ExtSD to computer, but now the search for a proper extSD replacement. Any recommendations? Leaning towards Samsung 32GB or 64GB...
UPDATE: SEE POST # 30

Yea I just bought mine about a month and a half go. One month in of using it, my card corrupted and I ended up having to reset it. Lost everything! Lucky I put anything of importance on my cloud before it finally died on me. :banghead:
Sent from my SGH-I317 Jedi ROM

I would suggest going with the 64GB. I never had any problems.

daywalker04 said:
I would suggest going with the 64GB. I never had any problems.
Click to expand...
Click to collapse
64gb are the issue right now. If you want a reliable card than buy Samsungs sd cards
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

Just got my replacement card today 64gb Sandisk. Bought it two months ago, card shows as raw format and can't access it at all.
Sent from my SGH-I317M using xda premium

Are you having issues with dropped calls too? I was thinking I was alone, and maybe it was a bad module? I got my phone 2nd hand, and that's my next step to order a new sdcard/sim card module and try to replace it. Data works fine and never cuts out, phone calls last maybe 30 seconds, and it's killed 2sdcards already. ..

johng75 said:
Are you having issues with dropped calls too? I was thinking I was alone, and maybe it was a bad module? I got my phone 2nd hand, and that's my next step to order a new sdcard/sim card module and try to replace it. Data works fine and never cuts out, phone calls last maybe 30 seconds, and it's killed 2sdcards already. ..
Click to expand...
Click to collapse
No problem with dropped calls... can still read/write to extSD fine, but now getting all the mount/unmount warning messages (and log confirms its poised for failure).

DoctorQMM said:
No problem with dropped calls... can still read/write to extSD fine, but now getting all the mount/unmount warning messages (and log confirms its poised for failure).
Click to expand...
Click to collapse
What did you use to format your card? Just curious cuz mine was formatted to fat32 before never had mount / unmount problem it just quit on me.
Sent from my SGH-I317M using xda premium

64gbyte Good ... Fire BAD ,,,
Andrew149 said:
64gb are the issue right now. If you want a reliable card than buy Samsungs sd cards
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2
Click to expand...
Click to collapse
I've used this card since November 2012. Never an issue. And have used it extensively. I currently have 5 fully ripped DVDs on there now and exchange with new ones every so often. Can't beat it. Love the way Samsung/Android has allowed add on cards to be used seamlessly with apps.
SanDisk Ultra 64 GB MicroSDXC Class 10 UHS-1 Memory Card with Adapter (SDSDQU-064G-AFFP-A)
J

jon3sh said:
What did you use to format your card? Just curious cuz mine was formatted to fat32 before never had mount / unmount problem it just quit on me.
Sent from my SGH-I317M using xda premium
Click to expand...
Click to collapse
FAT32... not a single problem for 5 months until today... and I r/w the crap out of my extsd cards daily... we'll see what happens.. still works, just getting these warning messages.

Really like that Samsung SD card idea.
Back to Amazon. ...g

I purchased one of these from Amazon last week. Works like a charm, albeit only when formatted as FAT32.
It is roughly twice as fast doing read/writes than my previous Samsung 32GB card.

DoctorQMM said:
FAT32... not a single problem for 5 months until today... and I r/w the crap out of my extsd cards daily... we'll see what happens.. still works, just getting these warning messages.
Click to expand...
Click to collapse
Could be the format of fat32 causing it used my other card with exfat format and never give me problem or maybe just bad batch of cards we got.
Sent from my SGH-I317M

My Sandisk stoped working also, so I bought the samsung 32gb and it's starting to do the same thing again. I just think there is something wrong with samsung phones in general.

I haven't had any issues with my sd card or phone. But a buddy of mine has burned up 3 pny cards and one sandisk. Although it's an s3. Sounds like a phone issue. I told him to call a warranty claim.
Sent from my SGH-I317 using xda app-developers app

Cant recall ever losing a card to a defect...but then again, I dont use sandisk either....g

Same hear had the sandisk ultra 64gb for almost a year and no issues
Sent from my SAMSUNG-SGH-I317 using xda premium

jimstars said:
I've used this card since November 2012. Never an issue. And have used it extensively. I currently have 5 fully ripped DVDs on there now and exchange with new ones every so often. Can't beat it. Love the way Samsung/Android has allowed add on cards to be used seamlessly with apps.
SanDisk Ultra 64 GB MicroSDXC Class 10 UHS-1 Memory Card with Adapter (SDSDQU-064G-AFFP-A)
J
Click to expand...
Click to collapse
You could of had a good batch but theres been 100s of reports sandisk fail over and over again
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

I just had mines ALMOST fail on me. Had unexepected removal notices for about a month. Started an RMA with Sandisk right before it started to go "Blank SD card".
Least they have 10 year warranties.

10 years ??
Wow....not bad....g

[Q] Problem with SD card

Hello to you all
First, I own this nice tablet s and bought a class 4 Kingston so card and didn't have much trouble until 4 days ago. Nearly every day since, the SD card stop working, and it needs to be formated in order to get it working again. I have copied several music a day videos and played them without any loss or error in them, but then from nowhere, it stops working.
Any ideas of how it can be fixed? I'm desperate cause I need to format it like once or twice everyday.
Thanks for reading.

I had a similar problem with my 32 Gig Sandisk Class 10 card, mine would just not read the card and would need a reboot to fix then it would be good for a few days and happen again. I have since replaced the 32 Gig card with a 64 Gig Samsung class 10 card, so far that card has not had any problems but I have only had it a week. I think the Tab S seems to be picky with certain cards. The 32 Gig card I have in a ASUS MeMo Pad 7 and it is working with no issues.

valkurchento said:
Hello to you all
First, I own this nice tablet s and bought a class 4 Kingston so card and didn't have much trouble until 4 days ago. Nearly every day since, the SD card stop working, and it needs to be formated in order to get it working again. I have copied several music a day videos and played them without any loss or error in them, but then from nowhere, it stops working.
Any ideas of how it can be fixed? I'm desperate cause I need to format it like once or twice everyday.
Thanks for reading.
Click to expand...
Click to collapse
depends on who/where you bought the sd card from. I have gotten knock off sd cards from ebay before that work like crap causing the issues you have described, so always buy from an official retailer. it may be that the sd card has gotten corrupted in a way that is not repairable as well

When it comes to sd cards (uSD) I have found using this to be the best tool for prepping/formatting and otherwise "fixing" cards. Now keep in mind, if a card is physically corrupted you're SOL but this utility has worked like a champ for me over the years.