I'm sorry. Right after I discovered the problem, I fixed it manually, and I have no records of the file with the missing line.
However, the bigger problem, IMHO, is that it wasn't there in the first place. Consider https://launchpad.net/bugs/58894 and a number of other bugs I reported in reference to RAID1. In the ideal situation, the fallback line and the secondary-disk kernel entries would be automatically added to menu.lst so that the user does not have to do it manually. -- update-grub wipes out "fallback" settings https://launchpad.net/bugs/63466 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs