LinuxQuestions.org - After BIOS update, raid 1 root won't boot

Hello

I had a perfectly normal Fedora 8 system running happily with a RAID1 / and /boot. After updating the BIOS to diagnose a potential disk problem, the boot sequence doesn't get very far.

The POST runs, the GRUB menu is displayed, and boots the default kernel. Then I get this:

Code:

Booting 'Fedora (2.6.26.8-57.fc8)'

root(hd0,0)

 Filesystem type is ext2fs, partition type 0xfd

kernel /vmlinuz-2.6.26.8-57.fc8 ro root=/dev/md1 rhdg quiet

  [Linux_bzImage, setup=0x3000, size=0x205da0]

initrd /initrd-2.6.26.8-57.fc8.img

Decompressing Linux... Parsing ELF... done.

Booting the kernel.

Red Hat nash version 6.0.19 starting...

mdadm: no devices found for /dev/md1

mdadm: no devices found for /dev/md2

EXT3-fs: unable to read superblock

mount: error mounting /dev/root on /sysroot as ext3: Invalid argument

setuproot: moving /dev failed: No such file or directory

setuproot: error mounting /proc: No such file or directory

setuproot: error mounting /sys: No such file or directory

switchroot: mount failed: No such file or directory

...and that's where it stops.

I only use md's. I do not use LVM.

I have booted with the rescue CD, and surprisingly it finds all the disk devices, assembles the raid devices and mounts everything just fine. The /etc/mdadm.conf is set up correctly, verified with a

Code:

mdadm --details --scan

From the rescue shell, I have tried running:

Code:

# chroot /mnt/sysimage

# /sbin/mkinitrd -v /boot/initrd-2.6.26.8-57.fc8.img 2.6.26.8-57.fc8

...and rebooted to exactly the same error.

I have tried reverting to the previous version of the BIOS to no avail. So I once again upgraded the BIOS and it now has the latest version.

Where do I go to from here?

Thanks for any help.

-D