one of the LVM Partions does not show up

[x201s]

This is what happened.
Created partitions, some of them LVM, in a server, say A.
Did the same for another server, B, but one more LVM partition.

Installed RHEL in A, and some other applications.
Made dump files for each partition of A and restored them in B.
No error in that process, except B won't boot.
Did chroot /mnt/sysimage and grub-install /dev/sda--still no good.
B came to a halt with GRUB> dispalyed.
Gave up, and restored the bootloader part-- I say restored because now B boots ok and I can see application that I had installed in A.
So far so good.

Problem: that extra LVM partition is missing!
I did not knowingly overwrite it, so where did it go?

Is it the grub.conf that tells the OS what to mount and what not to?
If yes, problem is , grub.conf is missing. In A, it is in /boot/grub/.

df -kh shows other partions (some of them LVM) just fine.. what is going on?

I tracked a file called menu.lst in a strange place, in /usr/share/doc/grub-0.97.. but I didn't see any entry that loads partitions.

Would appreciate some advice, hint, urls. etc.

Thank you.

Cheers,

[x201s]

Gave up, and restored the bootloader part -->> Gave up, and restored the bootloader part using OS CD.