@Henri: no my problem is not really solved. It appears that I accidentally installed grub in the Windows partition. This eventually messed up the MBR/Partition block. So far we were unable to restore it indicating that some additional problem exists, maybe unrelated to grub. The Grub update would not be able to do anything as it only affects the way how grub is installed during an update (i.e. not asking when grub resides in one partition only). It's definitely not a bug in grub but rather in the way the installer misleads us to install grub in wrong places.
-- Unable to access non-Ubuntu loaders from GRUB2 menu in Lucid https://bugs.launchpad.net/bugs/571893 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs