I am trying to run the Boot Repair tool on a Kubuntu 16.04 system with an encrypted (LUKS) root partition. This post tells me to "activate the encrypted drive using the correct name". That name should be given by /etc/crypttab in the live system.
My /etc/crypttab in the live system has no entries. The live system is also Kubuntu 16.04.
How can I identify/find the name I need?