I had the same problem after a fresh installation with the squeeze net installer.
The problem is caused by a missing crc232c module in the initrd as described here: http://lists.mandriva.com/bugs/2010-05/msg04062.php http://www.linux-archive.org/debian-user/472356-error-installing-squeeze-root-filesystem-btrfs.html For squeeze a workaround (not like mandriva, and not with the typo on linux-achive) is: - get a livecd, I used an old ubuntu karmic beta amd64 - follow the procedure to get a chroot as on: http://ganomi.com/wiki/index.php/Rescue_an_encrypted_LUKS_LVM_volume - add crc32c to /etc/initramfs-tools/modules - update the initrd using: update-initramfs -u then reboot. Ferry
