macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a. The process you follow will require you boot from the Recovery HD: Boot to the Recovery HD: Restart the computer and after the chime press. The utilities in macOS Recovery help you restore from Time Machine, reinstall macOS, get help online, repair or erase a hard disk, and more.
Reinstall OS X. When I did this with my MacBook Air, I restarted it after I If your Mac came with Lion, the Install OS X option will download and. Select the main volume and click Unmount then Erase). The process of resetting a Mac or MacBook to factory settings gets rid of all your data. Here's how to restore a Mac without a recovery partition. You can still buy a copy of Lion from the Apple Store here, but what you will receive.
Thankfully, the geniuses over at Apple have made the process easy for us—no need for a disc; no need Best of all, this will work with Lion, Mountain Lion, Mavericks, Yosemite, and El Capitan. .. I'm using Macbook Air with OS X Yosemite. Need to reset your MacBook Air or any other Mac back to its factory It's indeed confusing when re-formatting your Mac's hard drive when.