Here’s my tip for installing any new operating system.
Step 1: make a bootable back-up.
Step 2: test the bootable back-up.
Step 3. Disconnect the bootable back-up from your system.
Step 4: install new OS.
It’s 2009, and there are still MANY people out there who complain about what a new operating system did to their machine when they didn’t take any preventative measures beforehand.
If you don’t back-up your data before installing a new OS, you’re taking a very big risk. Can you afford to do that?
End of rant.