[linux-lvm] grub written over lvm partition

[Mauricio Tavares <raubvogel gmail com>]

	I was given an ubuntu desktop which has an interesting problem. It has 
only one HD with two partitions: /boot and LVM. In this computer, the 
lvm partition is the first one (/dev/sda1); I guess that is how ubuntu 
used to do things.

During the last OS upgrade someone told the updater to put grub on the 
first partition. As a result, the lvm partition got rather unhappy. Is 
there a way to retrieve data off that partition?