will Mountain Lion work on my old mac?

If you’re wondering whether your machine can be upgraded to run OS X 10.8 Mountain Lion, you can check the full list of supported models below.

To find out which model of mac you’ve got, hold down the option key on your keyboard and select

 > About This Mac

Check the ‘Model Identifier’ against this list:

MacBookPro4,1
Macmini5,3
Macmini5,2
Macmini5,1
MacBookPro5,1
MacPro4,1
MacBookPro5,2
iMac8,1
MacBookPro5,4
MacBookAir4,2
iMac11,1
iMac11,2
iMac11,3
MacBookPro8,2
MacBookPro3,1
MacPro5,1
iMac9,1
Macmini3,1
MacBookPro6,1
iMac12,2
iMac12,1
MacBook5,1
MacBook5,2
iMac10,1
MacBookPro7,1
MacBookAir4,1
MacBookPro5,3
MacBookPro6,2
MacBookPro5,5
MacBookAir3,1
MacBookAir3,2
Macmini4,1
Xserve3,1
MacBookAir2,1
MacBookPro8,1
MacBook7,1
MacBookPro8,3
iMac7,1
MacBook6,1
MacPro3,1

Of course, just because your machine’s listed, it doesn’t mean it will necessary meet all the specifications, so be sure to check the tech specs too.