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Type sudo tmutil deletelocalsnapshots -002010 (substitution the ID presented before)įor me, using macOS 10.15.6 beta on a MacBook Air, the answer by was close, but the actual example was simpler. You should be presented with something like this .-002010 (the number will be different) That that does not work try deleting it manually in the terminal. Wait a few minutes to allow the local snapshots to be deleted. Or choose Apple menu  > System Preferences, then click Time Machine.ĭeselect “Back Up Automatically” or click the Off/On switch, depending on what you see in Time Machine preferences. Open Time Machine preferences from the Time Machine menu in the menu bar. "If you want to delete local snapshots manually, turn off Time Machine temporarily: (This is the issue I faced when installing) After that, click on the gear icon labelled "Options".Are you using Time Machine, If so you may have local snapshots of them store locally on your Mac. On an Apple silicon Mac, you can also turn on your Mac and continue to hold the power button until you see the startup options screen.Use this key combination to erase your drive before giving it to someone else. If you've never installed 10.12.14 (Sierra), using ⌘ Cmd+ R will install the OS without tying it to your Apple ID.If you didn't have 10.12.14, Sierra, this key combination will not work. On an Intel-based Mac, to install the macOS your Mac came with, no matter how out-dated, press ⇧ Shift+ ⌥ Opt+ ⌘ Cmd+ R.

For example, a Mac from early 2012 will not be compatible with macOS 10.15, Catalina. To upgrade your macOS to the most current OS that is compatible with your Mac, press ⌥ Opt+ ⌘ Cmd+ R.If you're hoping for a different version, check out these alternatives: This key combination tells your Mac to reinstall the same version of macOS that was already installed. Press and hold ⌘ Cmd+ R right after you press the power button.