Description of problem: Installing F16 (RC5) x86_64 from USB onto a system with two SATA disk, configured several partition, and raid devices for each partition. When install completed after reboot I was greeted by No such device <uuid> then the grub rescue prompt. And ls (hd0,0) etc. just gives me no such partition. I didn't know what more I could troubleshoot from there. This is the same setup I've used on many F12/F13/F14 systems (I skipped F15) I tried several times with no luck. But #fedora-qa was helpful enough to show me the test case for SW raid installs: http://fedoraproject.org/wiki/QA:Testcase_Partitioning_On_Software_RAID It appears that it directs the user to make a non-raid /boot. Thats pretty nuts: if my system dies and I lose boot I won't be able to boot! Makes the raid kinda pointless (okay, it might reduce data loss, but thats what backups are for). So I really hope fedora hasn't dropped support for this, but at least if it has then the installer shouldn't let you try to configure it! After switching to a non-raid /boot it worked fine.
*** This bug has been marked as a duplicate of bug 750794 ***