I have an iMac with a broken motherboard. I got the HDD out of it and I now want to view my files on my Mac M1 device.

It shows my external device on Disk utility, but I'm unable to view the device through finder?

I know the old device is an HFS+ and my new Mac M1 is AFPS. It was a fusion disk, like I said, I can't use the motherboard any more.

The tool/cable etc to read the HDD works.

This is what I see in Disk utility enter image description here

enter image description here

enter image description here

Not sure if it was encrypted. Disk Drill can scan the documents, so there must be a way that I can view them through other ways that don't require me to pay 300$.

I was also able to remove the PCIe SSD from the iMac and figuring out how to connect this to my Mac M1 via USB. If I where to attach them both to my MacOs would read them as a fusion drive through help of a software?

  • Which iMac model is the disk from? Was it encrypted? How is the disk recognized in Disk Utility (screenshot)?
    – nohillside
    Apr 23 at 17:01
  • 3
    Did the iMac also have an SSD in there… a fusion drive? If so, you need both to be able to read it. they will not operate independently. The new Mac is, of course, perfectly capable of reading HFS+ if nothing else is preventing it.
    – Tetsujin
    Apr 23 at 17:02
  • Thanks for the super edits @nohillside - always appreciated
    – bmike
    Apr 23 at 20:25
  • 2
    The Fusion drive can be rebuilt - see support.apple.com/en-us/HT207584 and apple.stackexchange.com/questions/261154/… Both of these assume the drives are still in the original iMac, so you may have to modify the procedure [e.g. you may not have to be in Recovery to do it]. It's not something I've ever done personally, so idk the details.
    – Tetsujin
    Apr 24 at 7:57
  • 1
    Your latest edit changes the question from "how to access HFS+ from M1" to "How to rebuild a Fusion drive on a different Mac". This is totally fine, but please edit the whole question (including the subject line) to make this more easy to understand.
    – nohillside
    Apr 24 at 12:43


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