See Troubleshooting for more information on which format to select. If your Mac is using APFS, select APFS from the format list.
#Clean mac mac os
It's usually called Apple HHD or Apple SSD or something similar. This will be the main internal drive on your Mac. Confirm by clicking Delete when prompted.Īfter you've deleted each data disk, it's time to erase your startup disk.If the Erase Group Volume button appears, click that to erase all of the volumes associated with the drive.Click Delete APFS Volume from the menu bar or click the Remove button in the disk utility bar.Click Edit in the Mac screen's upper left corner in the menu bar.Select the data disk under the startup disk.Find your Startup disk (it should be named "Machintosh HD" unless you renamed it) in the sidebar.While the startup disc is waking up, hold down the Command+R keys simultaneously.Once your data is backed up and you've signed out of everything that might connect your old Mac to your personal information, you can erase everything on it by reformatting the hard drive. Note: If you're unpairing a keyboard, trackpad, or mouse on a desktop Mac, be sure to have a wired one plugged in, or you won't be able to type or use a curser, and you'll have to repair it all again. Hover over the device you want to unpair.Click System Preferences from the drop-down menu.Click on the Apple icon in the upper-left corner of your Mac's screen.It isn't really that important of a step, but if you sell your old Mac to, say, a roommate or someone living in the same house as you, you may experience accidentally connecting back to it.
#Clean mac Bluetooth
If you're keeping your Bluetooth devices, you don't want to leave them paired to a Mac that you're getting rid of. (Image credit: iMore) Step 3: Unpair your Bluetooth devices
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