Otherwise, you may lose important files after erasing hard drive on Mac. To start with, you need to create an up-to-date backup before you erase Mac hard drive. Erasing a Hard Drive Volume with Security Options If you wish to erase a hard drive’s volume and ensure the old information it contained can’t be easily recovered, you can use the Security Options offered when choosing the erase function. When the erase has finished, click the Done button. If you want to start up again from the disk you erased, select Reinstall macOS in the utilities window, then click Continue and follow the onscreen instructions to reinstall m acOS. The macOS installer cannot see or install your disk on Mac. The erase sheet will change to display a progress bar.Quit Disk Utility to return to the utilities window.
After the erase is done, select any other internal volumes in the sidebar, then click the delete volume (–) button in the toolbar to delete that volume.ĭuring this step, disregard any internal volume named Macintosh HD or Macintosh HD - Data, as well as any volumes in the External and Disk Images sections of the sidebar.Click Erase. However, if you see an Erase Volume Group button, click that button instead.
CANNOT ERASE HARD DRIVE MAC MAC OS
From the utilities window, select Disk Utility and click Continue.If asked, select a user you know the password for, then enter their administrator password.Start up from macOS Recovery: Turn on your Mac, then immediately press and hold these two keys until you see an Apple logo or other image: Command (⌘) and R.