iMac (2017) Fusion Drive failed - How to recover data?

The Fusion Drive on my 2017 iMac has probably failed. It no longer boots up. When I boot from an external USB, I find only one internal drive labeled "APFS Physical Store disk0s2" in Disk Utility and it's "Not Mounted." I tried to repair it with First Aid, but it failed with the error "An internal error has occurred." I ran "diskutil list" in Terminal and it shows three items:/dev/disk0 (internal, physical): 2TB; /dev/disk1: external, physical): 63.9GB; /dev/disk2 (synthesized): 63.7GB. It seems that there are one internal disk, one external disk and one synthesized disk of the external OS disk. How do I get back my data?

Best Answered by

Jenny Zeng

Answered on Tuesday, August 27, 2024

The SSD portion of your Fusion Drive has likely failed, as your Mac only recognizes the 2TB HDD. There's still a chance to get some of your data back from the HDD by following the steps below:

Step 1: Boot from your external USB installer.

Step 2: Download and install iBoysoft Data Recovery for Mac (save it on your external USB rather than on the internal hard drive).

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iBoysoft Data Recovery

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Step 3: Open the app, then click IBoysoft Data Recovery for Mac > Settings/Preferences in the menu bar.

Step 4: Tick the box beside "File type" underneath "Scan lost data by."

Step 5: Select the 2TB HDD and click "Search for Lost Data."

Step 6: Preview the recoverable files.

Step 7: Recover those you want back.