efivars is probably the goofiest and most uncomfortable way of handling this. They created this giant wasteful infrastructure in EFI and at the end of the day, you're still poking around in a bespoke filesystem to hopefully communicate GUID tagged facts about your boot drives to your bios.
There were tons of other ways this could have been accomplished for far less effort and with previously existing systems.
There were tons of other ways this could have been accomplished for far less effort and with previously existing systems.