I'm really not sure about your first point. > A cross-platform filesystem that you could read/write from Windows, macOS, Linux, iOS, Android etc. Fat32? There

I'm really not sure about your first point. > A cross-platform filesystem that you could read/write from Windows, macOS, Linux, iOS, Android etc. Fat32? There's plenty of newer file systems, for the most part if they aren't cross-platform by default then either the vendor has their own solution (Apple) or your system is fairly modular by design (linux). > Imagine having a single disk that could boot any computer operating system without having to manage partitions and boot records! The BIOS/UEFI Still needs to know what to boot, so the drive must be partitioned somehow. You'll want to store that data somewhere, and now you have a boot record. --- I'm not these drives solve either of those issues. Now the other ones you mentioned, those I agree with.