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,