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Create an install disk for os x lion how to#
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Create Bootable OS X Mountain Lionĭo not start the installation process when your download finishes. When you get back, we will look at how you can create a bootable copy of OS X Mountain Lion on your USB drive. Make sure that you won’t need any of the contents of the flash drive, if you do, keep a backup of it somewhere first. While you wait, get a coffee, a break and a USB drive with at least 8 GB capacity. Note that this may take up between 10 and 60 minutes, depending on your Internet connection speeds. If you’ve previously purchased a copy of Mountain Lion, don’t worry, you will not be recharged. Re-enter your App Store credentials if required. Look for OS X Mountain Lion, hold down the Option key and click Download. Launch App Store, and go to the Purchases tab. Here’s how you can download and obtain a soft copy of Mountain Lion. The installer you downloaded fro the App Store automatically deletes itself after you’ve successfully upgraded your Mac. Re-Download Mountain Lionįirst, grab hold of a copy of the Mountain Lion installer file.

Create an install disk for os x lion how to#

Recommended Reading: How to Clean Install OS X Mavericks 1.

Create an install disk for os x lion mac os x#

Make a bootable drive of Mac OS X Mountain Lion with a USB drive.

Download a copy of Mac OS X Mountain Lion.

Here is a breakdown of the steps involved: With that cleared up, in this article we will show you how to erase existing data and reinstall a brand new copy of Mountain Lion. A clean install will give you peace of mind. Two, you are thinking about trading or gifting your machine to someone else, but you are concerned with the remnants of files, profiles and various credentials that if mishandled, may lead to a security leak. To optimize your Mac, it is quite necessary to reinstall and start from a clean slate. Here are couple of reasons we can think of: One, your existing Mac OS X inherited documents, files and applications that take up a lot of unnecessary storage space. But first, why should you clean install the Mac OS X Mountain Lion at all?

Unfortunately in Mac the process can be a little more complicated and less well known. MacDrive, which offers a 5-day trial, probably does the same, but I haven't been able to verify this yet.In the Windows’ analogy, this is like reformatting your Macbook or iMac and reinstalling a brand new version of Mac OS X Mountain Lion. The right-side panel of TransMac allows you to right click your USB drive, the format the disk with the disk image. Be aware that other Windows tools might not be able to read the Apple-native DMG files.

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You will need the OS X install disk image (see above for various methods on how to obtain one), then use the 15-day free trial of TransMac to copy the disk image to your USB drive. You can now use your USB key like an installation disc.įor older versions of OS X (10.5, 10.6), you will also have to find an installation medium since there's no way to get them from the App Store, but the rest of the process is the same. dmg disk image, which you can restore to a USB key the same way as explained in the Ars Technica article above.īasically, you'll need to open Disk Utility, then select your 8 GB USB key, partition it fully with Mac OS Extended (Journaled).

Create an install disk for os x lion full#

The internet is full of … "places" where you can find installer images for OS X versions. If you don't have access to a Mac with App Store installed, you need to find your installer elsewhere. It requires you to download the installer through the App Store just like above, but creating the USB drive is now way easier. Lion Disk Maker is an application that you can use to burn a DVD or build a bootable drive from Mac OS X Lion or OS X Mountain Lion Installation program. Not feeling like hacking? Let Lion DiskMaker do the job for you: Ars Technica has an in-depth guide on how to do that: How to create a bootable, backup Mountain Lion install disk

Once you downloaded the installer you can create a bootable flash drive using /Applications/Install OS X Lion.app. They don't appear to do this anymore but maybe you can find one.ĭownload the OS X Lion installer from another Mac's App Store using your Apple ID. Given your vague error description it's hard to diagnose the problem here, but this is the usual way to go.Īpple used to sell USB keys with a Mac OS X Lion installer on it for around $60. Apple has details on this here: About OS X Recovery – basically, given high speed internet access and enough time, the recovery partition installed with Mac OS X Lion or OS X Mountain Lion should enable you to download the installer. If you don't have access to another computer: