WARNING: 15.7 Update + FileVault Permanently Locks You From External Drives

[Takuro]

Just filed bug FB20361778 with Apple for a stupid issue that's easy to reproduce:

- Clean install 15.7 on an external drive.
- Create a user, enable FileVault, and reboot.
- The user's password and recovery key will not be recognized. You are now totally locked out with no way to recover.

Reproduced on a 2020 iMac.

I know some said they released a 15.7.1 emergency update, but it's unclear if it addressed this.

 

[Che Castro]

I had to turn off FileVault on my Mac mini 2018 it was making my computer noticeably slower specifically on boot up