If you’d rather install Mountain Lion without a bootable copy and keep your setup the way it is, refer to our general tutorial. 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. Once your Mac’s hard drive is erased, quit Disk Utility and go back into the Mountain Lion installer.(Make sure you have a backup first, just in case.) From the erase tab, choose “Mac OS Extended (Journaled)” and wipe your drive. While its probably preferable to use Time Machine or another app to keep your Mac backed up, you could use rewritable CDs or DVDs and keep up to date copies of your data on them. Inside the Mountain Lion installation tool, you can open Disk Utility and erase your Mac’s hard drive.Restart your Mac while holding down the option key.
For a clean install of Mountain Lion on any compatible Mac, follow these steps:
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You can speed to backup important applications and critical data (Simply remove your SuperDrive and put the Caddy (with the added hard drive) in its place. Tool 1 - Disk Utility provided by Mac OS, the best free tool to format device. The 2nd Hard Disk Drive Caddy / Adapter to bring you new maximum data storage flexibility.
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. Here is a list of disk or usb formatting tools for mac or ways of formatting disk/usb flash on MAC to get it done.