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The mountain lion installer won't let me install on my Macintosh HD

4516 Views 8 Replies Latest reply: Aug 19, 2012 9:18 AM by RCW1947 RSS
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Aug 18, 2012 7:16 PM

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)


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