Disk types would appear to be a minefield.
I recently made my first attempt to dub from the DVD HD to disk. Out of six different manufacturers, only two were recognised as useable by the machine, one -R and the other -RW - which had to be formatted. When complete the disk replayed beautifully on the originating machine BUT NOT ON ANY OTHER!!!. Eventually had to resort to the 'pooter' and burn some video CDs which have worked beautifully on all machines. Even more irritating, the DVD recorder manufacturers (JVC) own disks couldn't be dubbed to
