I tried the suggestion of swapping the disks assignments: >Try telling grub to swap the disks: > >> title Windows 7 >map (hd1) (hd0) >map (hd0) (hd1) >> rootnoverify (hd1,0) >> chainloader +1 But that still just gets me invalid EFI file path Error 1: Filename must be either an absolute pathname or blocklist I think that my failing is something to do with grub and EFI. In the anaconda-generated grub.conf file, there is a line that reads device (hd0) HD(1,800,64000,9b55c4a9-fdbe-4fcd-857b-8e7e129e29f9) I have no idea where that UUID came from, as both blkid and ls -l /dev/disk/by-uuid do not have entries for the disks themselves, just for the partitions. Maybe that isn't even a UUID. At any rate, I'm wondering if there should be a similar entry for the other disk in the system. --- Mike VanHorn Senior Computer Systems Administrator College of Engineering and Computer Science Wright State University 265 Russ Engineering Center 937-775-5157 michael.vanhorn at wright.edu http://www.cecs.wright.edu/~mvanhorn/