How Do I Uninstall an Operating System on a Mac?
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How do I wipe my Mac and reinstall OS?

Select your startup disk on the left, then click Erase. Click the Format pop-up menu (APFS should be selected), enter a name, then click Erase. After the disk is erased, choose Disk Utility > Quit Disk Utility. In the Recovery app window, select “Reinstall macOS,” click Continue, then follow the onscreen instructions.

How do I remove old versions of OSX?

Mac OS X 10.3 Panther® or later:

  1. Using your Admin account, drag the Previous Systems folder to the Trash.
  2. Type your Admin password when requested to authenticate this operation.
  3. Empty the Trash.
Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.

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