To remove disk encryption

Yeah I won’t have anything important on this box and I just see it as an extra password to have to type in on every boot. I went into Gnome Disks and put the password in Encryption Options for the LUKS partition, thinking that might be a way to have the partition automatically decrypt for me, but it doesn’t save it; instead it gives me “Error updating /etc/crypttab entry. Didn’t find entry to remove (udisks-error-quark, 0)”.

So I guess I understand that the bios is not involved in the luks encryption, but I’m just curious is there no kind of BIOS settings/config accessible from a function key? The only thing it ever mentions is to press escape for boot menu. Is coreboot/seabios just a really simple setup with no options to configure?