if you want to reinstall anyway I'd recommend upgrading before wiping the OS. It will give you a chance to learn something of the works in the progress which is always helpful. If you get stuck, well, you did want to reinstall anyway
If you want to make absolutely sure that your data is kept:
- check the /etc/fstab file for your current data disk, copy that complete line somewhere and save it (e.g. mail to yourself)
- disconnect your data drive
- upgrade/install F10
- install/configure amahi (be aware though that if you want all your Amahi settings kept you'll need a backup of the database which you'll have to restore as well!)
- shut down system
- reconnect data drive
- power on system
- add the data disk line to the /etc/fstab file
- type "mount -a" as root and your data should be back
it's magic
