My dingoo came well....unpartitioned. As in it had no partition table and the whole device was being read as one. As far as i knew this was a big nono? Im in the process of reformatting it now. Fdisk threw countless errors at me because of the drive and debian/gnome-volume-manager refused to mount it, it did however manually mount.
I'm thinking this is the reason people with windows 7 are also having issues? If so they are in luck, just fixed the issue. Just make a new dos partition table, slap a new fat32 partition on it and your all good. Just played a video off the new setup.
just a thought, this might cause issues updating the firmware. if so delete the partition and format the whole disk as fat32 and not an individual partition and your good to go.