Mar 282010
How to convert ext2 partition to ext3?
Answer:
Firstly, you need to create a journal on it. This can be done either the file system is mounted or unmounted.
# tune2fs -j /dev/hdaX
Then, mount the filesystem as ext3
# mount -t ext3 /dev/hdaX /mnt/somewhere
Reference: http://batleth.sapienti-sat.org/projects/FAQs/ext3-faq.html