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macbook pro mid 2010

systan asked
Last Modified: 2013-12-06
I have a mac-book pro mid 2010, the original mac o.s is version 10.6.3 snow leopard

the hard disk crashed, so i decided to buy another disk, 160gig Sata

i downloaded mac o.s version 10.7.4, and decided to fresh install from a dvd, but durint installation, on disk options, it can't be partition, the command button for partitioning is locked, even in the erase menu bar at mac installation window, and I can't reinstall from version 10.7.4

I've read that when the mac is a mac-book pro on mid 2010, it should used the default mac o.s version.

I'd like to hear some experts here about mac installations,
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