You should either use the Recovery Disk Assistant method or wait for OS X 10.8.3.
For starters, if you own the 13-inch MacBook Pro with Retina display or one of the newest iMacs, such models use a special version of OS X 10.8.2 not available from the Mac App Store. Inside you’ll see the file InstallESD.dmg. Open Contents and then open Shared Support. Right-click (or Control-click) the Install OS X Mountain Lion app and choose Show Package Contents from the contextual menu that appears.
CHECK HARD DISK FOR ERRORS MAC INSTALL
Next, you have to extract the InstallESD.dmg file from the app’s package this is the file you’ll use to create the install drive. You may need to hold down the Option key when you choose Purchases to make the app show up. If it’s missing, redownload it from the App Store by selecting Apple menu > App Store. (Check in your Applications folder.) Even if you previously had this utility, it may no longer be on your drive, because OS X unhelpfully deletes it after you use it. In some cases, an Assistant-created drive will work only with the Mac that made it. Luckily, you have another way to create an emergency flash drive.įirst, you need a copy of the Install OS X Mountain Lion app. The do-it-yourself method: Lacking the Recovery HD partition on your startup drive isn’t the only reason you might skip using Apple’s Recovery Disk Assistant.
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