I see that I can enable regular Bitlocker, which requires the OS drive to be encrypted. I do not want to encrypt the OS drive, but I do want to use Bitlocker To Go to encrypt an external drive.
This doesn't seem to be enabled. The right-click menu of the external drive doesn't show the "Turn On Bitlocker" option. Also, the Bitlocker management wnidow doesn't show the option either.