Debian Sid on Let’s note R3 boot error.

rewrite /boot/grub/device.map.

(before)
(hd0)   /dev/hda
---
(after)
(hd0)   /dev/sda

And another partition installed Windows xp cannot boot. then, rewrite /etc/grub.d/30_otheros.

http://d.hatena.ne.jp/mkouhei/20080427/1209278847