Re: dosfslabel finds problem, e2fsck does not
On Wed, Jul 21, 2010 at 09:13:59PM +0200, Florian Kulzer wrote:
> On Wed, Jul 21, 2010 at 10:25:30 -0400, Thomas H. George wrote:
> > On Wed, Jul 21, 2010 at 08:28:59AM +0200, Florian Kulzer wrote:
> > > > > > > On Tue, Jul 20, 2010 at 11:25:42 -0400, Thomas H. George wrote:
> > > > > > > > My system, Squeeze, cannot install the latest kernel image because
> > > > > > > > dosfslabel finds a problem that prevents the installation of linux-base.
> > > > > > > >
> > > > > > > > Trying to resolve this I used e2fsck to check each of the disk
> > > > > > > > partitions and e2fsck reported all the partitions clean. However, the
> > > > > > > > result of running dosfslabel /dev/hda1 results in the following output:
> > > > > > > >
> > > > > > > >
> > > > > > > > There are differences between boot sector and its backup.
> > > > > > > > Differences: (offset:original/backup)
> > I did read the man page first. It said wipefs -n /dev/hda1 would do
> > everything except the write call. I ran it that way and the output was
> > much like the example you gave above with a message that two bits would
> > be removed. I assumed the two bits were the leftover signature and ran
> > wipefs again without the -n option.
> > Since then the computer was shutdown overnight. Reboot this morning
> > stopped in maintenance mode reporting a bad superblock in /dev/hda1. I
> > ran e2fsck -b xxxx /dev/hda1 where xxxx was the given alternate
> > superblock. The systen then rebooted normally.
> > Now the output of wipefs -n /dev/hda1 is:
> > offset type
> > ----------------------------------------------------------------
> > 0x438 ext2 [filesystem]
> > UUID: 2428f3c0-3098-448c-9484-587eb9f86e37
> > >
> > > Does "blkid /dev/hda1" still return the correct label, UUID and type?
> > Yes
> > /dev/hda1: UUID="2428f3c0-3098-448c-9484-587eb9f86e37" TYPE="ext2"
> OK, that is all fine. You did not give the details about how you used
> wipefs in your previous message, so I was getting worried that I might
> have inadvertently caused you to wipe out the ext3 signature.
> > Installation of linux-base still fails as described previously and
> > dosfslabel /dev/hda1 still gives the error message posted prevously but
> > e2fsck /dev/hda1 says it is clean.
> So we still have to find out why the postinst script runs dosfslabel on
> an ext3 partition. Looking at the script, it seems to assemble a list of
> filesystems and their types by analyzing /etc/fstab. I would therefore
> like to see your output for:
> grep -E 'hda1|2428f3c0|vfat|msdos|ntfs' /etc/fstab
The output is:
/dev/hda1 /temp ext2 rw,user,auto 0 2
/dev/sdc /media/fuze vfat rw,user,noauto 0 0
/dev/sg1 /usbdrive vfat rw,user,noauto 0 0
/dev/sda /media/usb1 vfat rw,user,noauto 0 0
I have copied everything on /dev/hda1 and /dev/hda5 on to a backup drive
and am considering a complete reformat of /dev/hda.
> Regards, |
> Florian |
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