You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Continue TimeMachine with Catalina or Erase?

I have an external TimeMachine drive, which is a RAID 1 drive. I've been using it with Sierra, 10.12.6, until yesterday, when I went up to Catalina, 10.15.6. So, now what should I do?

Is it OK to leave it as a RAID 1 drive? I couldn't reboot with it anyway.

Shall I reformat it as an APFS disk? Do I NEED to do that?

Is it OK to just leave it as it is? Can I just continue to backup to it in TimeMachine format?

I'm guessing I should at least erase and reformat as an APFS disk, and then backup in TimeMachine format.

But I'm going to wait to find out what my options are.

Screen shot included.

Posted on Sep 16, 2020 11:33 AM

Top-ranking reply

Barney-15E

Level 10

116,824 points

Posted on Sep 16, 2020 11:57 AM

I have an external TimeMachine drive, which is a RAID 1 drive. I've been using it with Sierra, 10.12.6, until yesterday, when I went up to Catalina, 10.15.6. So, now what should I do?

Nothing different.

Shall I reformat it as an APFS disk? Do I NEED to do that?

No. No.

I'm guessing I should at least erase and reformat as an APFS disk, and then backup in TimeMachine format.

What gave you that idea? Time Machine can't back up to an APFS drive.

View in context

Continue TimeMachine with Catalina or Erase?

Similar questions