You’ll also need access to a Mac running Yosemite that includes an existing Recovery HD partition. To create a recovery disk, you need a USB flash drive or an external hard drive that has at least 1GB free space. The simplest solution is to put an external USB drive or SD card into service using the OS X Recovery Disk Assistant. However, if your Mac is not online, or if you’ve upgraded an older Mac to Yosemite, that method won’t work. ![]() This recovery system is stored on a hidden partition on your Mac’s hard drive - but what if something happens to your hard drive? Well, if your Mac can’t find the recovery partition but it’s connected to the Internet via either Wi-Fi or a network cable, it’ll start the OS X Internet Recovery Feature. By installing a newer version of OS X onto the right external hard drive, you can boot that new drive from your old Mac install the Prosoft data recovery software on this new. Start your Mac and hold Command + R to go into recovery mode, from which you can start Disk Utilities, restore from a Time Machine backup, or perform a clean install. We would need to know your specs of the old Mac ti determine what external hard drive you need and what newer OS X version the old Mac will support beyond OS X 10.6.8. This is one of several hidden startup options on. To access Recovery Mode, restart your Mac and press and hold the Command+R keys during the boot-up process. ![]() ![]() You’ll find many other useful troubleshooting utilities herewhich you can use even if your Mac won’t boot normally. OS X 10.7 Lion did away with recovery disks, and these days, Apple provides a built-in recovery system within Yosemite. A Mac’s Recovery Mode is for more than just reinstalling macOS.
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