@cdp1337 @arraybolt3 @vkc I have a 400, and I seem to recall that I had to resort to Windows to create the NTFS file system on the drive, none of the Linux tools seemed to create it just so that the firmware would like it
Similar with virtual disk images (for USB stick emulation), while qemu-img can make these the firmware doesn't seem to like them, ones made from Windows work.
Apart from this its a great tool, and I wish I had known about it 10 years ago.