[Bug 6367] Hard disk dev name changes when ThinkPad is docked

[Edward Mendelson]

Public bug reported:
https://launchpad.net/malone/bugs/6367

Affects: Ubuntu
       Severity: Normal
       Priority: (none set)
         Status: Rejected
Affects: linux-source-2.6.15 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
Dapper Flight 2 installs successfully in an UNdocked ThinkPad T42, and
installs itself on the internal hard disk, which it sees as hda.

However, when you then dock the same ThinkPad in the ThinkPad Dock II
(the one with an additional bay for a floppy or optical drive, etc.),
Ubuntu won't boot, because it now sees the same harddisk as hde, not
hda.

A similar problem occurs when installing to the ThinkPad in the dock II:
the installer sees the hard disk as hda, but when Ubuntu starts up, it
sees the disk as hde, and can't complete the installation.

I think this didn't happen in Breezy (though my Breezy setup was
different), but it's a major annoyance in Dapper.

(This is a duplicate of 5913, because Malone won't let me add a
distribution name to that; I'll mark 5193 as a duplicate.)