Mac disk encryption - File Vault

https://support.apple.com/guide/mac-help/protect-data-on-your-mac-with-filevault-mh11785/mac#:~:text=On%20your%20Mac%2C%20choose%20Apple,may%20need%20to%20scroll%20down.)&text=Click%20Turn%20On.,asked%20to%20enter%20your%20password