www.ninjahdev.com

Ran into an interesting problem whilst booting Ubuntu on my WC6000. There are several physical disks each containing a root partition (previous distros) and GRUB is normally set to boot my current "flavour of the month!.

I saw a message about BIOS being updated and to save changes - not too strange as this machine always requires a F1 to boot (separate and acceptable condition), however it never normally has a change to save?

Booting would result in this message

Gave up waiting for root device ALERT! /dev/sdc1 does not exist. Dropping to a shell

An ls /dev showed that indeed it was gone! - according to /boot/grub/grub.cfg , /dev/sdc1 was previously the root partition but investigation showed that it should have been /dev/sdb1.

Editing grub.cfg fixed the issue but I'm left wondering why the drive mapping have changed?

Other oddities (with some many OS's) occur when external USB drives are plugged in thereby confusing drive letter order.