Re: MicroSD card mounts read-only



darkweasel wrote:
Jason Crain schrieb:
On Tue, December 30, 2008 11:28 am, darkweasel wrote:

Jason Crain schrieb:

A couple more things: After
you plug in the card, check the last few lines from the "dmesg" command.
Linux may change it to read only if it encounters errors from the
device.


[31788.888650] sd 6:0:0:3: [sde] 3842048 512-byte hardware sectors (1967
MB)
[31788.893145] sd 6:0:0:3: [sde] Write Protect is on
[31788.893155] sd 6:0:0:3: [sde] Mode Sense: 23 00 80 00
[31788.893162] sd 6:0:0:3: [sde] Assuming drive cache: write through
[31788.898145] sd 6:0:0:3: [sde] 3842048 512-byte hardware sectors (1967
MB)
[31788.902520] sd 6:0:0:3: [sde] Write Protect is on
[31788.902530] sd 6:0:0:3: [sde] Mode Sense: 23 00 80 00
[31788.902536] sd 6:0:0:3: [sde] Assuming drive cache: write through
[31788.902546] sde:


Also try running "mount" with no arguments. It should show you if the
device is mounted read only (ro)

Yes, it does.
/dev/sde on /media/card type vfat
(ro,nosuid,nodev,umask=0000,user=darkweasel)

Try unmounting and checking the filesystem:
sudo umount /dev/sde
sudo fsck.vfat -r /dev/sde

And then see if you can mount it writable:
sudo mount /dev/sde /media/card -o rw,user=darkweasel,umask=0000


I already tried this before.
dosfsck 2.11, 12 Mar 2005, FAT32, LFN
open /dev/sde:Read-only file system



I'm a little late to this thread, but do we know if this card can be
written to from another OS? I mean, it's entirely possible the card
itself has gone bad. I've seen it happen before, although it's rare.

If all else fails, I'd try to fdisk it and blow away the partition on it
with brute force.

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