Hi everyone,

I have run into some serious problems trying to start up RHEL AS4. I am trying to install Oracle on this box which by the way is running as a guest OS through VirtualBox. I was running with it fine yesterday. I was doing the prerequisites of updating the /etc/sysctl.conf file with additional kernel parameters. Prior to that I added another scsi virtual disk and extended a PV and left it at that for the night. I am since come back today and trying booting and am getting the following errors:

Volume group "VolGroup00" not found;
Couldn't find all physical volumes for volume group VolGroup00;
Couldn't find device with UUID "Some UUID of the device";
ERROR: /bin/lvm exited abnormally! (pid 318);
mount: error 6 mounting ext3;
mount: error 2 mounting none;
switchroot: mount failed: 22
umount /initrd/dev failed: Z
kernel panic - not syncing: Attempted to kill init!

I have tried running in rescue mode and it can find volume group VolGroup00. I also have installed Storage Foundation which includes veritas volume manager and other various veritas components.

Does anyone have a clue what I am supposed to do here to get RHEL up and running again?

I am running kernel version 2.6.9-42.EL if that helps as well.

All ideas are welcome and will be greatly appreciated.

Many Thanks

Sunny

Maybe partition numbers changed. Try changing boot parameters when you boot, seting lesser of higher number X in "root(H0,X)".

The root partition is (HD0,0) in the /etc/grub.conf.

Here is something interesting I tried out. I booted up in rescue mode and made a backup of the /boot/initrd<version number>.img and then ran mkinitrd initrd<version number> <version number> and then rebooted and it all started up fine. Do I need to make any amendments in the /etc/grub.conf or has this now solved the problem?

If it boots properly now, I don't think you need to do anything. But make a backup of the current /boot/ folder, for safe keeping.

You might also want to reinstall/install current kernel, BUT NOT WITHOUT A BACKUP.