We’ve compiled a list of the questions we get asked most frequently, along with answers and links to columns: read our super FAQ to see if your question is covered. Now both your system and Data volumes are deleted, providing a fresh start for a new owner or new macOS installation. (This option doesn’t appear if you have selected the container or drive on which the volume group appears.) Note that while the main volume is filled in and its name can be changed, and there’s a prominent Cancel/Erase set of buttons, look to the lower-left corner for the Erase Volume Group button.Select either of the two volumes in the container for the system (see figure).Click Disk Utility at the bottom of macOS Recovery’s screen.Navigate to macOS Recovery, which may involve selecting a user account and entering its password to unlock the startup volume.On an Intel Mac, restart or start up while holding Command-R with an M1, shut down the Mac, then hold down the power button until “Loading startup options” appears.

How to wipe an imac