grub2 and ext4

[Micha Feigin <michf@post.tau.ac.il>]

turns out the issue is ext4 which doesn't work with grub, but it does with
grub2. The problem is that the kernel seems to miss read the partition.

I setup another partition to rescue my system so now I have
sda1: ext4 - original system
sda5: ext3 - small rescue system

grub2 installed on both (current is suppoesed to boot from sda1)

if I set in grub
set root=(hd0,5)
linux /boot/vmlinuz-2.6.28 root=/dev/sda1 ro

everything works fine

If I set
set root=(hd0,1)
linux /boot/vmlinuz-2.6.28 root=/dev/sda1 ro

I get a kernel panic: couldn't load root file system tried: xfs

any idea on how I can get the kernel to recognize that it has ext4 file system
so that I can dump the rescue partition (i.e make the first option work)?

Thanx


On Thu, 1 Jan 2009 13:22:32 +0200
Micha Feigin <michf@post.tau.ac.il> wrote:

> After the last update grub started booting into the command line (shows
> grub> ) and seems to ignore menu.lst. I managed to boot by setting
> kernel /boot/vmlinuz-2.6.28
> boot
> I then tried to reinstall the kernel hoping that it would fix grub but now
> when I try the same method to boot I get the error
> Invalid or unsupported executable format
> The drive is formated to ext4. grub worked after that but maybe the kernel was
> written in a different method now?
> 
> any ideas?
> 
> thanks
> 
>