Comment # 32 on bug 907092 from Takashi Iwai

(In reply to Alan Horsfield from comment #31)
> After installing gcc it went smoothly till I tried to boot the the new
> kernel, 3.14.0testing.  I got:
> Kernel panic-not syncing : VFS : unable to mount root fs on unknown
> -block(0,0).

This means that the filesystem module wasn't compiled or installed in initrd
properly.  Check whether the corresponding module (e.g. ext4) got built, and
the corresponding initrd contains it (run lsinitrd command to see the
contents).

Note that now both ext2 and ext3 are supported by ext4 module on the recent
openSUSE kernels, not by ext2 or ext3 module.