Hi I have a Macbook Pro and an Imac, so my question is if have to buy 2 OS X Mountain Lion or can i buy one and install on 2 computers?
You only need to buy one, just use the same Apple ID to login and you can re-download Mountain Lion on the 2nd Mac. Or, copy the installer before installing on the first computer and transfer and install onto the 2nd Mac.
Buy it once and then you can install it on any mac associted with your Apple ID.
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