8 Replies Latest reply: Aug 19, 2012 9:18 AM by RCW1947
RCW1947 Level 1 Level 1

I've downloaded the installer for Mountain Lion, but it won't install to my HD. I use a separate USD drive for Time Machine, which I ejected before trying the install (it wouldn't work before I restarted after trying with the USB drive attached).

iMac, Mac OS X (10.6.8)