sorry for the repeated comments but now im sure the problem lies with findfs
when my fstab uses /dev/hda2 update-grub works correctly. but when my fstab uses the UUID which is correct update-grub fails and gives the above error message. i hope this will allow somebody to solve it... -- GRUB's menu.lst modified in wrong way -> Error 15 File not found on next reboot https://launchpad.net/bugs/61108 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
