iMAC install 10.7 to upgrade from 10.6

I downloaded 10.7. But when I try to install it I can not select the hard drive.

The message says (This disk is used for Time Machine backups ).

I turned off time machine and that didn't help.

Can I delete time machine? Or get to the backups and delete them?

iMAC, Model ID iMAC7,1, processor name intel Core 2 Duo, Processor speed 2.8 GHz, Cores 2, L2 Cache 4MB, Memort 2 GB, Storage 500 GB

Posted on Dec 20, 2014 2:58 PM

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iMAC install 10.7 to upgrade from 10.6

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