Hi, Thank you for your answer. I've managed to edit /boot/grub/menu.lst There was a typo in the file. I've restarted, and when things seems to go well, LVM lost track of its volumes. > The rescue mode is aware of LVM2 and can mount that. It seems that unfortunately not. rescue mode even tells me i have no Linux installed. Should i go on and update without formating ? I've tried that, but it doesn't let me indicate the mount points to the volumes. Any ideas ? Thank you. Warm Regards,