j'ai finalement trouvé la solution sur la page suivante :
[
www.ubuntugeek.com]
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This tutorial is for people who have encrypted their main volumes of their hard drives using the method offered by the Alternate CD installer.
First you need to Boot into a Live CD environment and open up a terminal window. (applications–>accessories—>terminal)
Install required packages using the following command
sudo
apt-get install lvm2 cryptsetup
probe required module using the following command
sudo
modprobe dm-crypt
setup the crypto module to recognise the partition
sudo
cryptsetup luksOpen /dev/hda2 VolGroup00
Enter your passphrase. You should get the following message:
key slot 0 unlocked.
Command successful.
If not, something has gone wrong.
Scan for volume groups
sudo
vgscan --mknodes
sudo
vgchange -ay
REMEMBER the name of the volume group, as you will need it later.
mount the encrypted volume
sudo mount /dev/VolGroup00/LogVol00 /mnt
The volume is mounted, now you can chroot or whatever else you need to do. If you would like to open the gnome file manager for writing to it issue the following command:
sudo nautilus /mnt
Poste le Tuesday 2 September 2008 01:46:29