Dual Boot: Near Disaster…

Today has been a little emotional…

I decided I wanted to dual boot a server with Fedora 15 and Oracle VM 3.0.1. The machine already had Fedora 15 on, so I moved some stuff around to free up a 1.5TB drive and decided to install OVM on that.

The installation went well, but I made the schoolboy error of overwriting the bootloader on the MBR. After the restart it was all completely toilet.  This incident left me checking my underwear because the Fedora installation contained a load of VMs, including RAC and Data Guard installations. None of them were that important, but they would be a pig to set up again.

To sort it I booted from the Fedora 15 DVD and did a repair, telling it to recreate the bootloader on the MBR. A few seconds later, normal service was resumed. Phew.

So then I retried the OVM installation on the clean drive, remembering not to place the bootloader on the MBR this time. The installation went fine again. I booted into Fedora 15, edited my “/etc/grub.conf” to include a chainloader entry. I rebooted and picked the chainloader line from my grub screen only to find I got “Error 21: Selected disk not found”.

After a bit of investiagtion it seems only my RAID1 system disk is visible to grub. The controller doesn’t seem to be able to present the individual disks, unless I kill the RAID1 config. Crappy controller.

So I now have two options:

1. Buy another disk (or move this “spare” one) and put it into another machine with a sane controller and dual boot that.
2. Buy another box that is dedicated to OVM.

I kind like option 2, since dual boot is a total pain. All my boxes have a purpose and having something missing while I play with OVM is not ideal. Trouble is it’s more money and it is a machine that is likely to be unused a lot of the time. Seems a bit of a waste.