I’m not sure it matters, but I noted the inscription “AVATAR MB” on the picture 0013. As I had found earlier, in the firmware source code archive MPW’s OS files are stored in the folder \buildroot-GPL\primax_packages\wdcore_avatar. Perhaps, the module with the inscription “AVATAR MB” is the storage with MPW’s OS?
I suppose it’s absolutely reasonable decision to provide MPW with an independent storage for OS. You can change HDDs easily not having to reinstall OS.
