Du kannst die Partition(en) einfach von ext2 nach ext3 konvertieren:
Edit your /etc/fstab. For each partition that you want to convert into ext3, edit the entry so that it looks similar to the following line.
/dev/hdXX /mnt_point ext3 defaults 1 0
In the above line, replace /dev/hdXX by the partition (e.g. /dev/hda2), /mnt_point by the mount point (e.g. /home). The 0 in the last field ensures that the partition will not be checked for consistency during bootup by the checkfs script. You may replace the ext3 fs type in the above by auto if you want to ensure that the partition is mounted if you accidentally skip enabling the ext3 support in the kernel.
For each partition that you have converted to ext3 in /etc/fstab, enable the journal for the partition by running the following command.
tune2fs -j /dev/hdXX
Gruss
Flo