Updated

What to do when FileVault won’t turn on

Diagnosing an oddball scenario in which you can’t enable FileVault requires more information than macOS provides.
filevault2 mac icon
Apple
    Related:
  • Mac
  • MacOS
  • Security
  • FileVault 2
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.