During the installation routine of Loki there's a prompt to choose whether to install 3rd-party-drivers. If you choose yes, the prompt tells you you have to disable UEFI secure boot because otherwise the 3r-party-drivers cannot be installed. Also, you have to choose a passphrase needed to disable UEFI secure boot.
I'm wondering if the disabling is permanent or just a one-time thing for the purpose of installation. Also, the password I chose was never asked for during the installation procedure. Any ideas?