Quick Answer: Do I Install macOS on Macintosh Hd or Macintosh Hd Data?
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Do I Install macOS on HD or HD data?

The OS is located on the “Macintosh HD” volume. User data is located on the “Macintosh HD – Data” volume. If you erased the drive volume, then why not erase the whole physical drive instead?

What is the difference between Macintosh HD and Macintosh HD data?

The Disk Utility app in macOS Catalina shows that Macintosh HD is the read-only system volume and Macintosh HD – Data contains the the rest of your files and data.

Sarah Jenkins

Sarah Jenkins

Senior Technology Editor & AI Specialist

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.

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