VFS: Cannot open root device "LABEL=/" or 00:00

[Stuart Sears]

Evan Panagiotopoulos wrote:
> After updating my system I received the following error:
> 
> VFS: Cannot open root device "LABEL=/" or 00:00
> Please append a correct "root=" host option
> Kernel panic: VFS: Unable to mount root fs on 00:00
> 
> My grub.conf file is:
> default=0
> timeout=10
> splashimage=(hd0,1)/grub/splash.xpm.gz
> title Red Hat Enterprise Linux ES (2.4.21-32.EL)
>         root (hd0,1)
>         kernel /vmlinuz-2.4.21-32.EL ro root=LABEL=/ hdc=ide-scsi
>         initrd /initrd-2.4.21-32.EL.img
> title Red Hat Enterprise Linux ES (2.4.21-4.EL)
>         root (hd0,1)
>         kernel /vmlinuz-2.4.21-4.EL ro root=LABEL=/ hdc=ide-scsi
>         initrd /initrd-2.4.21-4.EL.img
> title XP
>         rootnoverify (hd0,0)
>         chainloader +1
> 
> 
> As you can see I have two kernels available. The "older" kernel ,
> 2.4.21-4.EL, is running just fine. Since the new kernel is more up to
> date, I would much rather try to get the other on working.
it sound like this might be an initrd issue if the older kernel works fine.
have you tried rebuilding it?
/sbin/mkinitrd -f -v /boot/initrd-2.4.21-32.EL.img 2.4.21-32.EL

and then booting the system with it again...

Stuart