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Q: Attempting to install OS 10.10 on a 2012 Macbook Pro now running 10.9.

I am attempting to install OS 10.10 on a 2012 Macbook Pro now running 10.9.  the program will not allow me to select the Mac HD and flashes 'this disk is used for time machine backups."  I can get no further.  Any recommendations?

 

Thanks

Posted on Mar 21, 2015 12:09 PM

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Q: Attempting to install OS 10.10 on a 2012 Macbook Pro now running 10.9.

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