Started to play around with my rMBP 2012 & High Sierra...
First try : I had a working Sierra setup with FileValut activated, did the upgrade (check APFS upgrade) and got stuck in a reboot/crash loop until I rebooted in safe mode and uninstalled the Sophos antivirus.
After that, everything worked (well I didn't test every single app, but didn't notice any problem).
Since it was a loaded setup (didn't reinstall for years, just upgraded every time), I wanted to see how it works from a fresh install... and there it begins :
- you can't install on an encrypted APFS partition : after reboot just a black screen with the mouse pointer shows up
- you can't convert an installed APFS partition to encrypted : activate FileVault stays grayed out in system preferences
Basically, the only way to have APFS encrypted so far is to install 10.12, activate FileVault and then upgrade.
First try : I had a working Sierra setup with FileValut activated, did the upgrade (check APFS upgrade) and got stuck in a reboot/crash loop until I rebooted in safe mode and uninstalled the Sophos antivirus.
After that, everything worked (well I didn't test every single app, but didn't notice any problem).
Since it was a loaded setup (didn't reinstall for years, just upgraded every time), I wanted to see how it works from a fresh install... and there it begins :
- you can't install on an encrypted APFS partition : after reboot just a black screen with the mouse pointer shows up
- you can't convert an installed APFS partition to encrypted : activate FileVault stays grayed out in system preferences
Basically, the only way to have APFS encrypted so far is to install 10.12, activate FileVault and then upgrade.