CD to CD Copies keep putting out UNREADABLE CDs

[LordAccord]

This has never happened to me before with OTF burning, but I got a new SCSI burner in, and now when I do CD to CD copies on the fly, the CDs come out unreadable. Even at 8x and 4x they come out unreadable. Why would this happen? I have had no CD problems from HDD to CD, but CD to CD if I dont copy it to the HDD first, I get dead CDs. Anyone know whats up?

LoRdAccord

 

[corkyg]

That can be several things. It happens if the CDs are not finalized. It can happen if the wrong driver is used. It can happen if copy protection is involved (many newer music CDs have that.) It can happen with a buffer underrun. What software do you use? Have you run all the appropriate tests with your new drive?

 

[LordAccord]

Im using nero 5.5...I have no choice but to finalize the CD in OTF copy mode, I wasn't aware that I was going to need a driver for these drives, I have never had to have a CDRW or CDROM driver for ANY situation before except back in my DOS days, the buffer was never underrun (as I said, Im on SCSI and I tested it from 12x all the way down to 4x with a few different settings, all in all I have 8 CDs that wont read. I thought it could have been a disc mode problem, I will do a few more tests with some other drives to see if its just a problem with my drive reading a mode, but I fail to believe that I could burn a CD that my burner couldnt read.... lol. These are copies of compiled data only CDs, its not a copy protected problem... I thought of all those variables. I will try using a different program just to see whats up, but thats the last thing I can think of....

anyone else?

LoRdA

 

[corkyg]

I don't mean a driver for the drive per se, but an update to the software that correctly lists the drive. Does Nero enumerate the drive correctly prior to burning? On your SCSI adapter, do you have Bus Mastering on or off? (Unless you are booting to a SCSI HDD, it is best off.) It wouldn't hurt to reinstall Nero.

Also, I assume the SCSI burner is external? ( I have an H-P 9210, SCSI Ext) Are you turning the drive on ahead of the computer? Does it have burn-proof? With mine, I always used the OTF option that caches the data on the HDD before burning. (Back door burn proof for drives that don't have it.)

 

[LordAccord]

The drives are all showing up correctly and have the latest firmware, and they show up correctly in Nero. I will check bus mastering. The SCSI burner is internal, no burn proof, and I used to use cache to HDD for all my copies until I went all SCSI...one of the main reasons is so I can do stuff int he background without affecting the SCSI independent bus. So, I think it would defeat the purpose of having the drive if the CD to CD copies wont work OTF....

I dont know... lol theres some stuff I need to try, thanks for the advice that you have been giving....I may be reformatting in a few days, which always can help.

LoRdAccord

 

[corkyg]

OK. That opens up a possibility that your CD ROM source drive going through the IDE controller can't keep up with the buffer on the SCSI target drive. I am guessing that the SCSI burner has probably a 1 MB cache, and if it ever gets much below 90% you are in danger of a buffer underrun.

However, if that happens, you will usually get a kicked out CDR along with an error message.

Does Nero apparently complete the burn and finalize the CDR?

 

[GregANDTCH]

Maybe your CD-Rom is about to "Bite the Big one".
Run the Nero CD-Speed on it and see if it's irregular.
BTW, is it set to run "DMA mode"?