Tag Archives: APFS

How to install a clean macOS


You want to sell or give a way your MacBook. You want to ensure that the new owner will not access any of your data.

You may also have so many buggy applications on your MacBook and want to increase stability and performance of your macOS.


  • Create a backup of data in your machine .
  • Sign out of iTunes, iCloud, iMessage, App Store.
  • Remove Messages account.
  • Restart the machine and hold Cmd + R.

  • Click the Disk Utility menu item.
  • Click the Continue button.
Ignore macOS Base System Disk (it will be removed after a new macOS is installed).
  • Click a volume (e.g. Macintosh HD – Data).
  • Click the minus (-) button on the tool bar above the Volume label.
  • Click the Delete Volume Group button.
  • Click the Done button.

  • Click a volume (e.g. Container disk2).
  • Click the Erase button on the tool bar.
  • Set Name = Macintosh HD, Format = APFS.
  • Click the Erase button.

APFS, or “Apple File System,” is one of the new features in macOS High Sierra. It’s optimized for solid state drives (SSDs) and other all-flash storage devices.
  • Click the Done button.
  • Click the red Close icon to close the Disk Utility.
  • Click Install macOS (or Reinstall macOS) menu item.
  • Click the Continue button and follow the instructions to install a clean macOS.