
For more on Mountain Lion, be sure to read the official Cult of Mac review. If you’d rather install Mountain Lion without a bootable copy and keep your setup the way it is, refer to our general tutorial. Lastly, if you’re still having issues, a secondary USB or. Choose your Mac’s hard drive and begin installing Mountain Lion.īy following those steps, your Mac will be restored to Apple’s stock setup and all of your personal files will be gone. Then, using Disk Utility within the Internet Recovery tools, partition and format the drive, then install a copy of OS X Mountain Lion.


Restart your Mac while holding down the option key.For a clean install of Mountain Lion on any compatible Mac, follow these steps: Now that you have a bootable copy of Mountain Lion, this drive/disk acts as a full-fledged setup tool for upgrading other Macs to the new OS.
