Downgrade from Yosemite to Mavericks?
 

Can someone confirm I can use my SuperDuper clone to roll back from 10.10 to 10.9? I image I can perfectly roll back to Mavericks from Yosemite if I have a full disk all files clone right before I perform the upgrade, am I right? If so, for the roll back process, should I use the Normal Backup or Smart Backup or other option? Thanks.

Hi, Derek. Yes, you can roll back. You'd use "Restore - all files" with either "Smart Update" or "Erase, then copy". (Usually, given the sheer quantity of files being copied, Erase would make sense here.)

Check your backup before you install, though: try to start up from it.