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.

Level 1

8 points

install os on internal flash or sata drive or both?

I have a late 2013 iMac and the mechanical part of the fusion drive died. I have had the hard drive replaced and now have 2 drives:

121gb Flash Drive (named Untitled)

4TB SATA Drive (named 4TB)

the flash drive has Mohave installed and the 4TB is empty.

My question is should I leave the OS on the Flash Drive, and leave the 4TB for data?

Install an OS on just the 4TB or on both drives?

or rejoin the drives as a fusion drive as it used to be before the replacement? (if that is possible).

And finally is it advisable to upgrade this mac to Catalina?

Thanks in advance for any replies.

iMac 27″, macOS 10.14

Posted on Jun 10, 2020 8:49 AM

Top-ranking reply

Community+ 2024

Level 10

188,316 points

Posted on Jun 10, 2020 9:46 AM

ssharville wrote:

I have a late 2013 iMac and the mechanical part of the fusion drive died. I have had the hard drive replaced and now have 2 drives:

121gb Flash Drive (named Untitled)

4TB SATA Drive (named 4TB)

the flash drive has Mohave installed and the 4TB is empty.

My question is should I leave the OS on the Flash Drive, and leave the 4TB for data?

Install an OS on just the 4TB or on both drives?

or rejoin the drives as a fusion drive as it used to be before the replacement? (if that is possible).

And finally is it advisable to upgrade this mac to Catalina?

Thanks in advance for any replies.

Was this originally a fusion drive?

How to fix a split Fusion Drive

View in context

Similar questions