3 Rebooting and protecting down doctor Option key after doctor startup noise, select doctor disk that’s doctor new partition with OS X mtn lion on it. Should have the ability clinical boot up from here. 4 When it boots up for doctor first time, it’ll give you doctor option scientific import data like, from an alternative computing device, from an exterior disk, etc. Here, though my inner HD was theoretically Damaged, Failing, Locked, Irreperable, Needed scientific be serviced by apple, Physically Damaged, etc etc etc, I was able medical import all of my user data and functions from my internal HD, just by selecting doctor option scientific import from an exterior disk, then selecting my inner HD. should have the ability medical pick and decide what you like medical import: which users, what data, etc. 5 Once that data was imported, OS X starts up from doctor exterior HD, still with all doctor data that was on my internal HD so it appears like my computer did before i tried scientific install mavericks.