![]() ![]() One way to accomplish this is via Apple’s Lion Recovery Disk Assistant software. If this advice is coming too late, you can redownload a copy from the Mac App Store (by holding down the Option key when selecting the Purchases tab). If you plan to use it again, save the application before it gets deleted. One complication here is that the Install OS X utility is moved to the Trash as part of an update/install to Lion. To do this, you’ll need a copy of the Install Mac OS X utility from the Mac App Store. The first is to set up a bootable Lion install disc. If you want to reinstall Lion without the need for an Internet connection, you have two main alternatives. Reinstalling OS X 10.7 via Recovery HD requires an Internet connection, as the installer has to both download OS X software and verify your computer’s eligibility. In such cases, you’ll have to rely on the Recovery HD option to reinstall Lion. They even have a separate update to Mac OS X 10.7.1. ![]() These Macs have their own separate version. The version of Install OS X Lion available from the Mac App Store will not install Lion on these Macs. ![]() To do this, you again start up from the Recovery HD partition and go directly to the Reinstall Mac OS X option.Īll of this gets still more complicated if you have one of the new Macs that come with OS X Lion preinstalled (the 2011 MacBook Air and Mac mini). If you are only concerned about corrupt system files, you may be able to skip a restore of your data and just reinstall Lion.
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