I want to restore access to Thinkpad Rescue and Recovery partition on my laptop. The recovery partition is visible in the Grub menu but starting it results in fatal error.
I found this info at http://www.thinkwiki.org/wiki/Rescue_and_Recovery :
The MBR written by GRUB can be used to launch the Rescue and Recovery application. However, if you leave the type of the Rescue and Recovery partition to 0x12 (Compaq diagnostics), trying to boot this partition will result in an error message "c000021a, Fatal System Error". To avoid that, and to make sure the recovery partition is always of the right type, add a line to change the partition type to 0x0b (FAT32) to the Rescue and Recovery partition's entry in your /boot/grub/menu.lst
This relates to GRUB and not to GRUB2. I started to read manual for making changes in GRUB2 but I am not sure if I understand correctly what I have to do to change partition type to 0x0b
I found this post http://ubuntuforums.org/showthread.php?p=8725140 but there is no feedback if it worked or not.
I do not want to make changes to GRUB2 unless I am sure I wont break it. It is why I would appreciate a step by step tutorial what to do. The recovery partition is sda2