One of the perks of paying for both the iOS as well as the Mac development program is that you get early access to the latest OSX beta versions. (Apple abhores the term “BETA” and thus calls everything “Developer Preview” lately)
I’ve been running my MacBook Air on most of the preview builds of OSX 10.7 “Lion” and so I was exited to move to the Gold Master version as well. My SSD was partitioned in two halves, one for 10.6 “to be safe if I need it” and one for 10.7. Now with Lion being final and working well I wanted to reclaim the entire SSD for the new and shiny cat.
But something went horribly wrong. Let me tell you about that and raise your awareness for a couple of precautions.