I don't understand why anyone would use passwordless disk encryption. It just seems inherently vulnerable, especially with the threat model of physical compromise.
Entering a password on boot isn't even that much work
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Entering a password on boot isn't even that much work
I'm using it on my home server that I'm using for self-hosting. This way, if it's stolen, the thief won't be able to easily get to my data. At the same time, I don't have to physically enter the password if my server reboots.