The MyBook Worlds use the HFS+ filesystem. You'd probably be able to read it from a MacOS system. Or you can try HFS Explorer or MacDrive. Google for others.My BookWorld unit disappeared from my network a few days ago. I've removed the drive (single TB drive) and connected it to a Windows PC. It sees the partitions as "Unknown." I found a driver for Linux filesystems under Windows, assuming the drive was Linux, or at least Linux-ish, still "Unknown."
Anybody ever been able to just hook one of these up and read it? I have to get to some stuff on it. This drive was the backup to another failed system.