After asking on both this forum and the Fedora forum, I felt it was safe enough to install a copy of Fedora on my working-well openSUSE drive. I have a 1 TB drive, partitioned as follows:
partition1 : 100G openSUSE /
partition2 : 100G Fedora /
partition3 : 50G Swap for both
partition4 : 340G openSUSE /home
partition5 : 340G Fedora /home
I did an install of Fedora 13, was VERY careful to set up the installer to put it’s files in the partitions I wanted, although I did let it mark the partition as active, feeling it may have to boot during the installation process.
I had grub installed in the root of the partition rather than the MBR for both systems.
When Fedora finished installing, I rebooted the system only to find that it wouldn’t. I got the dreaded “No Boot Device” message.
So, I started the 5 hour process of booting with the parted magic disk, booting with a Gentoo live disk (only one around), monkeying with the install parts of the openSUSE and Fedora disks, swapping drives to Windows to download openSUSE Live CDs (yes, both) and searching the forums and various other web sites for some poor bloke who did the same stupid whatever it was I did, and finally, as I was using fdisk on the Gnome Live CD, I noticed the warning message stating that fdisk would not work on a drive that was partitioned with the GPD format.
Notice that I have 5 partitions? That is not a typo on my part, I used the GPD format when I set it up so I could do what I did without using “imitation” partitions.
When I used parted (the command line editor on the Gnome Live CD) to change the active partition, everything started working again! Well, at least I can boot the openSUSE system, the most important thing.
It is my suspicion that the Fedora install uses fdisk to do it’s work, and fdisk just mucks up a GPD formatted disk. Not the information, just the part of the drive that holds the partition table. Perhaps just the flags section. I don’t know enough to say with any certainty.
I didn’t change the drives parameters during the installation of Fedora, so I don’t know of it even offers the GPD partitioning option. If not, I can understand how this sort of thing could happen.
Still…
So now all I have to do is make the grub menu, the one installed with openSUSE, boot the Fedora installation on the next partition. Seems simple enough.
This is not a swipe at Fedora, I post it only because I hope I can save somebody from spending the hours I did tracking down a problem.
Bart