MacMost Q&A Forum • View All Forum QuestionsAsk a Question

How Do I Know Which Drive To Erase?

I’m reinstalling the os on my old MacBook before giving it to my wife. In Disk Utility, there Macintosh HD, but then there’s also something called Macintosh HD – Data. Which drive do I select to erase?
—–
Cameron

Comments: 5 Responses to “How Do I Know Which Drive To Erase?”

    4 weeks ago

    Those are two volumes on the same drive. Catalina puts the System on a read-only volume, and everything else on a separate volume. That’s why you see two volumes.

    If you want to erase the drive, you need to view the drives. Click on the View button and select Show All Devices. Then you’ll see the drive and the volumes under that. You can then select the drive and erase it.

    Cameron
    4 weeks ago

    I’m just not sure which drive to select

    4 weeks ago

    Cameron: There is only ONE drive. Did you change your View to show “Show All Devices?” If so, then you’ll see there is only one drive and both of those volumes are on that same drive.

    Cameron
    4 weeks ago

    Ok, yes, I see that. I was just confused, because in episode #1286 you appear to choose the Macintosh HD volume under APPLE SSID and erase that. It was the only thing in your dropdown menu, so when I had two things in my list, it threw me off.

    4 weeks ago

    Cameron: Right. Episode #1286 was from 2016. Catalina is new in 2019 and changed how the drive is formatted. Disk Utility changed too.

Leave a New Comment Related to "How Do I Know Which Drive To Erase?"

:
:
:
0/500 (500 character limit -- please state your comment succinctly and do not try to get around this limit by posting two comments)