I am using the 451s DVDR drive,
I found it only cannot read those DVD-ROM booktype discs which were burned by itself. other booktype it can read normally.
Those DVD-ROM booktype discs can be read by any other DVD drive.
it's a very strange problem, can anybody help me?
(i've try to flash the drive w/ all possible firmware, such as, 451s@851s, 451s@832s)