Mac os x mountain lion erase hard drive

How to Reformat Mac OS X Without a Recovery Disc or Drive « Mac Tips :: Gadget Hacks

If you are trying to download an older version of Mac OS before Yosemite, you will get this error because the software is no longer available from Apple. You can pick up an install disk at an Apple Store or order it online. Yes No.

Not Helpful 0 Helpful 3. How can I reduce the unwanted applications that take up disk space on my Apple computer? If you mean the pre-installed applications, they cannot be removed or put in the trash like downloaded apps. Not Helpful 4 Helpful 1. Include your email address to get a message when this question is answered.

How To Erase Your Mac’s Hard Drive and Reinstall OS X

Already answered Not a question Bad question Other. By using this service, some information may be shared with YouTube. Swipe between pages of apps in Launchpad by clicking and holding your mouse while making a swiping gesture left or right, or use a two finger gesture on your trackpad.

Step 2: Erase the hard drive

Related wikiHows. Is this article up to date? Cookies make wikiHow better. By continuing to use our site, you agree to our cookie policy. About This Article. It's possible to do a clean install of Mountain Lion, but the process takes a little bit of work. Does this guide looks familiar?


That's because it's nearly identical to the clean install guide for Lion we wrote last year. This download is over 4GB, so if your Internet connection isn't super fast, plan to get some other stuff done while you wait.

As soon as the download is complete, exit out of the installation prompt. We don't want to do an install right now. Right-click or control-click on the program icon and select "Show Package Contents. Open up Disk Utility it's in the Utilities folder in Applications.

At this point, you should see the various hard drives connected to your Mac.

Reinstalling Mountain Lion

If you haven't already plugged in an empty USB thumb drive or a hard drive with an empty partition, do that now. Select "InstallESD. Click open. This mounts the installer image we just copied to the desktop.

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