Boot with bad superblock in root fs

Patrick fedora-list at puzzled.xs4all.nl
Mon Aug 28 02:18:49 UTC 2006


On Sun, 2006-08-27 at 20:49 -0500, Jay Cliburn wrote:
> Charles Curley wrote:
> > On Sun, Aug 27, 2006 at 07:57:19PM -0500, Jay Cliburn wrote:
> >> Is it possible to boot a Linux system that has suffered unfixable 
> >> primary superblock corruption in the root filesystem (ext2)?  I know the 
> >> mount command can be supplied an alternate superblock with the sb 
> >> option, but AFAIK, the earliest this can be done is by setting the 
> >> option for the failing partition in /etc/fstab.  But of course, root 
> >> must already be mounted for that to apply.
> >>
> >> Is there any Way to specify an alternate superblock to initrd to mount 
> >> the root filesystem?
> > 
> > Can you boot to a live CD, fix the errant partition, and then reboot?
> > Finnix should do you.
> 
> Actually, the problem isn't with my system, but with that of an 
> acquaintance, and no, the primary superblock refuses to be fixed with 
> e2fsck -b executed from Ubuntu LiveCD.

Maybe this link helps. Has other possibilities when e2fsck -b fails.
http://www.cyberciti.biz/nixcraft/vivek/blogger/2005/11/surviving-linux-filesystem-failures.php

Regards,
Patrick




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