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MacSE1987 Author

Level 1

4 points

fusion drive won't mount

I restarted my iMac Friday night, as I always do before running the backup app. The Apple logo appeared, the white bar went halfway across, then it went black. Happened multiple times, after I unplugged all the devices, unplugged the Mac itself for a minute, tried safe boot, and zapped the PRAMs.

My computer guy said the drive locked itself. He can't unlock it because it won't mount. Any suggestions, as to how to unlock the thing? Or access it otherwise?

iMac 27″ 5K, macOS 10.13

Posted on Nov 7, 2022 12:46 PM

Top-ranking reply

Old Toad

Level 10

210,795 points

Posted on Nov 7, 2022 3:04 PM

Boot into the Recovery volume (boot with the Command + R keys held down - Intel Macs) or (How to Boot an M1 Mac into Recovery Mode), launch Disk Utility and see if any part of the fusion drive is visible.

You might have a failing HDD or the fusion drive became un-fused.

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fusion drive won't mount

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