preupgrade reboot to rawhide from F10 fails to recognize / FS

[marko]

I have a Sony Vaio SZ730 laptop with Fedora 10 x86_64 and tried to upgrade it to rawhide via preupgrade. This laptop has a mount point that's ext4 but that's at
mount point "/virtual/vms"

/dev/sda6 ext4 98941300 1853028 92062340 2% /virtual/vms

I use this for holding big virtualbox files and iso files.
but root "/" is plain old ext3

The preupgrade worked ok getting the packages but the reboot to install F11/Rawhide dies (really badly) at console error:

No filesystem could mount root, tried ext3 iso9660
kernel panic - not syncing VFS: unable to mount root fs
unknown block (9,2)

By really badly I mean I can't even reboot with holding the power button 5 seconds, I have to pull the power plug out and various LEDS on the laptop like the NumLock and Scroll lock are blinking which suggests some addresses were affected that usually shouldn't.

This is the preupgrade inserted grub stanza
title Upgrade to Rawhide
kernel /upgrade/vmlinuz preupgrade repo=hd::/var/cache/yum/preupgrade stage2=hd:UUID=438aee68-0959-4c40-ae94-bd0ec2069
630:/upgrade/install.img ks=hd:UUID=438aee68-0959-4c40-ae94-bd0ec2069630:/upgrade/ks.cfg
initrd /upgrade/initrd.img

I checked with "blkid" and the UUIDs are correct for /boot

the kernel the preupgrade used was 2.6.29-0.53.rc2.git1.fc11.x86_64.

Since / and /boot are both ext3 I don't get what's wrong. Is it possible for that /dev/sda6 to be a problem even if it's not the / partition? It's kind of unusual because I didn't mount to the standard /media point.

[SlowJet]

Try changing the grub boot up kernel line
from root=uuid
to
root=/dev/VolGroupnn/LogVolnn for LVM
root=/dev/sdan for linux 83 partitons.

Also try the old kernel

SJ

[marko]

Try changing the grub boot up kernel line
from root=uuid
to
root=/dev/VolGroupnn/LogVolnn for LVM
root=/dev/sdan for linux 83 partitons.

Also try the old kernel

SJ

I'm not sure what you mean with 'try the old kernel', do you mean it's possible to
use the previous F10 kernel to do the preupgrade bootup just that one time and then swap back in the rawhide kernel after it's done by editing the grub.conf file? (Ie for that one time, the system will be a weird hybrid of a F10 2.6.27 kernel running but with rawhide packages)

The system can boot to the previous kernel fine so it's not an issue of the system being unrunnable if that's what you meant.