I have this issue that my 1640 is having problems with transfer tests using certain media, starting at under 2x and freezing afterwards.
The media that does transfer tests fine are: Fujifilm YUDENT02, Verbatim MCC003/004 MCC02RG20, MAXELL002, Phillips CMC MAG M01, Sony SONY08D1
Media that does not do transfer test properly: Fujifilm ProdiscR05
The Prodiscs I’ve bought yesterday and I haven’t had experience with them before. Burned using 1640/BSLB/WOPC off at 12x.
I’ve tried using DVDDecrypter/Alcohol 120 to copy the Prodisc, yet the speeds remain under 2x.
However, i can run quality scan at 8x on the Prodisc that don’t transfer test properly.
Using my nec3520, the Prodisc’s run thru the transfer tests just fine and copy at higher speeds.
Can it just be that Prodiscs can’t read back at speeds that other discs can??
My 1640 is using BSLB, modified with MCSE to increase read speed.
I’ve tried flashing to BSOB and no changes, so I flashed back to BSLB.
UDMA 2 mode, master with no slave on the channel.
Nero aspi, no recent software installations.
Nero cdspeed options set to maximum, dvddecrypt/alcohol read speed set to maximum. The disc is reconized as 16x capable with overspeed set to off.
I have included 3 screenshots, a transfer test and quality scan of the Prodisc and one of CMC mag performing xfer test with speed dips.