![]() And put the drive in a draw while hoping they don’t need to see it again until they need to add another OS X installer version to that drive. On that drive they should create a bootable OS X installer drive for OS X. A bootable driveĮvery Mac user should invest in a high-capacity USB 3.0 flash drive. Don’t stay there for hours, if this doesn’t happen within a few minutes it’s reasonable to assume it won’t work. Keep those keys depressed until you see a globe symbol and progress bar appear. Restart your Mac and hold Option-Command-R when the start up chime chimes. The sequence is similar to the way you usually access Recovery, with the addition of the Option key. If you can get your Mac online you can try Internet Recovery, though this requires you to download a hefty chunk of data and takes time. (For an idea of what these applications can do, read this excellent article which remains relevant to OS X El Capitan). ![]() Among other things they can create a complete copy (Disk Image) of your Mac, restore that image once you’ve repaired your Mac, and let you startup from the external drive the backups are stored on. You should now be able to choose the Recovery Drive to launch your Mac.īackup software Carbon Copy Cloner and SuperDuper are both great tools for creating Mac backups. ![]()
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