Problems with mounting an external Fusion Drive to a 15-inch 2018 MacBook Pro.
So, I had a problem with the external Fusion Drive to be used for backup for my PC. But because of problems trying it on PC, I decided to get an actual Mac computer to see if it works fine. When I plugged the external drive with the HDD enclosure into the MacBook with a USB 3.0 to USB-C adapter, the icon of the external drive doesn’t pop up. When I go to Disk Utility, it does show the external drive, but when I click mount, nothing happens. No error, no sign that it’s working, though I think the read/write lights does seem it’s trying to work, but I think the latest macOS version got confused and doesn’t give me something what happened to it. I did try First Aid, but bizarrely it was complete, and it didn’t work. I even did the same thing with Recovery Mode with the same options, but they’re exactly the same thing. I even tried a restart of my MacBook to see if it detects the Fusion Drive properly while it’s booting, but that also didn’t work. I did try to see if my MacBook can boot to my Fusion Drive using Target Disk Mode, but it shows the Thunderbolt/USB symbol, aka it’s waiting for a mounted external drive I think, so I skipped. I did try disk recovery using Disk Drill, but even if the files were fully recovered, they weren’t actually complete, they’re partial. I don’t know it has something to do with the drive starting to become faulty for being used for a few years and it fails to boot, alongside the display from my 27-inch 2017 iMac due to the dust causing component problems, or maybe it was encrypted to only be used on the specific iMac. Disk Drill did still detect that this is an APFS drive though the partition for my stuff still says “RAW”, so maybe my Fusion Drive is starting to stop working in the next several months or years or so, hence why it’s unmountable. If anyone knows any problems or suggestions, let me know. Thanks. 🙂
MacBook Pro 15″, macOS 15.4
