memory card corrupted (MicroSD)
 

a few days ago i noticed i couldn't access the micro sd card in my N900. it worked perfectly before and it still works perfectly when i use it on my pc or other phones. i even can format it on my pc without problems.

but everytime i put it i my N900 it gives a message in the "memory" page in settings that the card is corrupted.

i installed the 900MHz zImage kernel could that be a problem?

Re: memory card corrupted (MicroSD)
 

Try backing up the data on your PC, reformatting the microsd card and putting the data back. If you still have problems it's not the card itself.

Re: memory card corrupted (MicroSD)
 

As root in terminal:
fsck.vfat -a /dev/mmcblk1p1
then reboot

Re: memory card corrupted (MicroSD)
 

i had this problem also i just rebooted the phone and it worked. i dont know what caused it.

Re: memory card corrupted (MicroSD)
 

i've already tried that

this gives me
open /dev/mmcblk1p1:No such file or directory
and no, i didn't type it wrong, i've copied pasted it

but in /dev
i have a few directories with the same naming;
mmcblk0
mmcblk0p1
mmcblk0p2
mmcblk0p3
mmcblk1

edit:

does the p1 mean the partition?
because that'll mean that i have to select the whole device instead of 1 partition. can anyone confirm this?

Re: memory card corrupted (MicroSD)
 

Could simply be a bad card, I have a 8gb Transcend MicroSD card that is crap, it "works" but everything always becomes corrupt. No matter if I use in my N900, N95, Camera, PC... it is just defective. Other cards work fine.

If you have data you want to recover, try "testdisk", it was able to get most of my files from the corrupt card.

Re: memory card corrupted (MicroSD)
 

Yes, overclocking the CPU could result in filesystem corruption or even possibly damage to other circuits such as the card reader.

Re: memory card corrupted (MicroSD)
 

What's the card formatted in?
You can try mount /dev/mmcblk1 /media/mmc1 but I'm not sure if it'd work.

Re: memory card corrupted (MicroSD)
 

this gives an input/output error :confused:

edit:
is there perhaps a program like fdisk that runs on the N900? because i'm used of using fdisk on linux.

Re: memory card corrupted (MicroSD)
 

anyone? when i search the forum about this, i can only find problems with a corrupt internal memory.

Re: memory card corrupted (MicroSD)
 

You can try using sfdisk to partition the card, but it's not the most user-friendly of fdisk programs (it's designed more for scriptability). You can dig out the manual pages online and give it a go though.

Re: memory card corrupted (MicroSD)
 

sfdisk: read error on /dev/mmcblk1 - cannot read sector 0
/dev/mmcblk1: unrecognized partition table type
No partitions found

this is what i get when i list all the partitions.
is it possible that the whole card reader isn't working right?
i'll try flashing back to the default kernel this afternoon

Re: memory card corrupted (MicroSD)
 

Flash the stock kernel back then try again. or even perform a full re-flash.
There is a remote possibility of hw damage caused by overclocking but it would be extremely rare.

Re: memory card corrupted (MicroSD)
 

Plug it into a PC and use gparted to create a new partition table.
If that doesn't work I'm guessing your card is dead.

Re: memory card corrupted (MicroSD)
 

i'll try that this afternoon.
but the card isn't dead, i tested it through my pc

Re: memory card corrupted (MicroSD)
 

Do you have any other microsd cards you can try? You said it works fine in everything except your N900...could be that your N900 has a problem.

Re: memory card corrupted (MicroSD)
 

i have the N900 for about 1 month, i've flashed the 900MHz firmware 3 days ago, i don't know if the memory card problems started before or after i flashed it.

i'll try to reflash it in a minute

edit:
i'm installing ubuntu in a VM, so it'll take more than a few minutes. but should i reflash everything? even the emmc?

Re: memory card corrupted (MicroSD)
 

The eMMC shouldn't affect the SD card at all, so I'd try just doing the firmware first. If that still doesn't work, then do both.

Re: memory card corrupted (MicroSD)
 

i've been trough a lot of trouble, and i finally did it.
i've had to flash the os and the emmc. but now my microsd card works again. thanks for all the help

Re: memory card corrupted (MicroSD)
 

Other than reflashing, did you also do the repartitioning?

I ask because DOS/Windows will happily and annoyingly transparently, use a partitionless block device (disk) as a drive, say E: or some other letter. You can find out, but it's not immediately obvious that it's not a partition on the SDcard.

Linux/bsd/etc can all do this but you tend to notice. The n900 is looking for /dev/mmcblk1p1 as a fat(32) partition. It won't try the whole device nor accept non fat.

So when you say the MicroSD worked, you might have seen it using /dev/mmcblk1 (or whatever terminology Windows uses to mean whole disk).

Re: memory card corrupted (MicroSD)
 

You need to flash it on your phone mate.

Re: memory card corrupted (MicroSD)
 

what do you mean?

Re: memory card corrupted (MicroSD)
 

I can confirm that after flashing the 125/900 kernel I got 'sdcard not found' when I`m opening Sygic.....then I flashed the stock kernel and again back to the 125/900 , as well as restoring the 'about' info and now all is great.