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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.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. If you're keeping your Bluetooth devices, you don't want to leave them paired to a Mac that you're getting rid of. Click Delete from Mac to remove Safari passwords and credit cards from this Mac.The data will be saved on other iCloud devices. You do not want to keep a copy of anything on this Mac. Untick all of the boxes that keep a copy on the Mac.
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Enter your system password when prompted.Select System Preferences from the drop-down menu.Ĭhoose on Apple ID (on macOS Mojave and older, click on iCloud).Click on the Apple icon in the upper-left corner of your Mac's screen.Click Preferences from the drop-down menu.Choose Messages in the Menu bar at the top left corner of your screen.Click Account in the Menu bar on the left side of your screen.How to sign out of iTunes (macOS Mojave and older) or the Music app (macOS Catalina or later)
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To avoid complications with the new owner attempting to download and install software licensed by you, make sure to sign out of everything your personal information is connected to. The software you have on your Mac is licensed to you, which means it doesn't get transferred to your computer's new owner (except the operating system).
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