Please excuse the long intro…
As far as I can ascertain, Type 2 and Type 4 DVD-RAM discs (which come in a caddy) which have had data recorded on them, have a “flag” recorded on the disc that makes them “read only” when they removed from their cartridges. A “tray loading” DVD-RAM drive will not write to caddyless Type 2 and 4 discs while this flag is set
Over a few years, I had three Panasonic caddy loading DVD-RAM drives which have all failed after the warranty ended. As they failed unlike any other optical drives I have had, I switched to an LG GSA-H10N multi drive which is tray loading DVD-RAM capable drive, as they are much cheaper and (hopefully) longer lasting. However, I am unable to write to my old DVD-RAM Type2 & 4 caddy discs using this drive under Windows xp professional SP2 and am looking for some utility that will enable me to reset the switch on the discs.
If I try and erase one of my used DVD-RAM discs using the Disc and Device Utility in Roxio Creator Classic 9 it gives an error message "Can not write medium incompatible format - illegal request 05/30/05. Checking the disc properties in the utility shows a green tick beside “Can be quickly erased”.
Any help in getting these disc back into my media pool would be greatly appreciated!!