What to do if your Mac’s Fusion Drive fails (or shows signs of failure)

Macs with Fusion Drives are rarely serviceable, and you’ll lose a lot of speed if the SSD conks out. The next step isn’t obvious.
Fusion Drive icon
Apple
    Related:
  • Mac
  • iMac
  • Fusion Drive
Glenn Fleishman’s most recent books include Take Control of iOS & iPadOS Privacy and Security, Second Edition (covering iOS 15/iPadOS 15), Take Control of Your M-Series Mac, and Take Control of Securing Your Mac. In his spare time, he makes Tiny Type Museums. He’s a senior contributor to Macworld, where he writes Mac 911.