You're kinda right in the wrong way.
The BIOS only needs to support LBA48 as a convienence to the software operating system. If it doesn't support it, then the boot sectors need to be below the 137GB line, which is plenty easy enough to do, AND the soft OS disk drivers need to support LBA48.
We've been going round and round on this kind of thing in computers since long before the PC was invented, and several times with PCs, too.
Can you say 2GB limit, boys and girls?
In any event, the operating system's file management system is what needs to really support the bigger drive. If it's built-in to the underlying OS, which MAY be Linux, then you're probably good to go.