[Bug 32519] root disk not found when booting on Sony Vaio PGN-S3XP

[Ondřej Surý]

Public bug reported:
https://launchpad.net/malone/bugs/32519

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

Description:
When upgraded from breezy to current dapper my notebook won't boot anymore, it prints:
Loading essential modules...  done
Waiting for root disk...

and then it waits some time and drops into initramfs, after loading ahci
and sg_mod modules, my root device is available again and boot can
continue.

Workaround: boot into system, edit /etc/mkinitramfs/modules and add:
ahci
sg_mod

then rebuild initramfs (mkinitramfs 2.6.15-15)

...same behaviour was in Dapper around Flight CD 3.