My home server was running Fedora 10 and I tried to preupgrade it to F12, however the F12 kernel wouldn't work at all on this machine (it oopsed before even mounting the root) and no matter how frantically I pressed the arrow keys during boot I could never get into the GRUB menu and stop it from booting into F12 anaconda. Also, it had no CD drive and LiveUSB boot failed too. Luckily I had another harddrive laying around which had grub on it, so I could install and boot from that instead and return to F10. (The real fix turned out to be to upgrade the BIOS.)
Long story short: There are situations where a grub menu is vital, like until you've successfully booted a new kernel. /Alexander -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel
