I see a pattern here and in other similar posts, i.e.
Many people trying to install FC4 on their secondary hard disk, using the auto-partition mode, get errors or simply can't boot fedora when installation finishes. Perhaps they did not setup grub correctly during install. Perhaps not.
As a matter of fact, a friend of mine has the exact same problem: On hda (which is PATA) he has WinXP and on hdb (which is SATA) he installed FC4 using auto-partition. When Fedora rebootted after install, Grub did not appear, Win XP did! We tried booting from the FC4 DVD > Rescue Mode, reached console, issued chroot /mnt/sysimage and then grub-install /dev/hda but the answer was something about missing driver of /dev/sd ??
The menu.lst was the following:
# grub.conf generated by anaconca
title Fedora Core (2.6.11-1.1369_FC4)
kernel /vmlinuz-2.6.11-1.1369_FC4 ro root=/dev/VolGroup00/LogVol00 rhg quiet
Does anybody know something about this problem? Could it be a bug?