Apple: SSH and FileVault
apple_ssh_and_filevault(7) Miscellaneous Information Manual apple_ssh_and_filevault(7) NAME apple_ssh_and_filevault — SSH and FileVault DESCRIPTION When FileVault is enabled, the data volume is locked and unavailable during and after booting, until an account has been authenticated using a password. The macOS version of OpenSSH stores all of its configuration files, both system-wide and per-account, in the data volume. Therefore, the usually configured authentication methods and shell access are not available during this time. However, when Remote Login is enabled, it is possible to perform password authentication using SSH even in this situation. This can be used to unlock the data volume remotely over the network. However, it does not immediately permit an SSH session….
