9 Replies Latest reply: Jul 22, 2011 10:12 AM by woodmeister50
cathy fasano Level 2 Level 2 (340 points)

And not just a TimeMachine backup -- go out and buy an external hard drive (they are cheap) and use Carbon Copy Cloner or Super Duper to make a bootable clone of the disk.


(Of course if you are the sort of person who checks the discussion group before trying the update then you are likely the same sort who has already run your clone...)