Mac os x mountain lion install app

Click OK. All data on the USB flash drive will be deleted. Click the Apply button.

A note on installer compatibility

Disk Utility asks you to confirm that you want to partition the USB device. Click the Partition button. Do not select the volume name; select the device name. Click the Restore tab. Drag the InstallESD. It will be near the bottom of Disk Utility's device list. You may need to scroll down to find it. Drag the USB flash device's volume name from the device list to the Destination field.

How to get and install old Mac OS versions + The evolution of macOS (infographic)

Some versions of Disk Utility may include a box labeled Erase Destination ; if yours does, make sure the box is checked. Click Restore. Disk Utility asks you to confirm that you want to perform a restore, which erases all information on the destination drive. Click Erase. If Disk Utility asks for your administrator password, provide the information and click OK. Continue Reading.

They should have image installations going back to OS Leopard and earlier. You can also ask their assistance to create a bootable USB drive with the installation file. So here you are. We hope this article has helped you to download an old version of Mac OS X. Below are a few more links you may find interesting.

How to Clean Install Mac OS X Mountain Lion - Hongkiat

How To. Blog How To News. Hit Return or Enter to search. Download and install older versions of OS X on a Mac. Igor Degtiarenko. Writer and blogger at MacPaw, curious just about everything. Did you enjoy this post?

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Get the latest version of the Mountain Lion installer

Subscribe to know first Our delivery owl will bring you our best deals and news about MacPaw apps. Thanks for signing up! Similarly, any bootable Mountain Lion install drive you create will not automatically be updated to the latest installer version. If you create an install drive and later download an updated version of the Mountain Lion installer, updating your install drive means erasing it and repeating the procedure below.

HOW TO: Do a Clean install of Mac OSX 10.7, 10.8, 10.9, 10.10, And 10.11

How do you know if you have the newest version of the Mountain Lion installer? The easiest approach is to simply look at the Information box on the Mountain Lion page on the Mac App Store—specifically, check the date next to Updated. If the Mac App Store date is newer than the Modified date on your copy of the installer, you need to re-download the installer to get the latest version.


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If you create a new bootable installer using the first major update to Mountain Lion after your Mac was released, it should be able to boot all your Macs. For Lion, I explained how to create a bootable install drive for newer Macs. Follow Steps 1 through 4 in this slideshow to properly format the drive.

Here are the steps for using it to create your installer drive:. The restore procedure will take roughly five to ten minutes, depending on your Mac and the speed of your drive s. If you ever created a bootable Lion-install drive, you may have performed the above procedure without mounting the InstallESD disk image.

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As of version You can use Disk Utility's Restore screen to create a bootable flash drive or hard drive. Using Carbon Copy Cloner Version 3.


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Carbon Copy Cloner can create a bootable Mountain Lion installer in a few easy steps. As with using Disk Utility, the process takes roughly five to ten minutes. However, unlike recovery mode, your bootable installer includes the entire installer. He now has many, many bootable install drives. Updated am to correct Carbon Copy Cloner price. Updated with new Disk Utility image. The latest version of OS X, But before you rush to install Mountain Lion, you'll Mountain Lion OS X