SCSI Reader/Writer Problem

[johnnymk]

I am having a problem directly writing from a SCSI reader to a SCSI writer. Before I go into too much detail, is anyone familiar with direct reading using SCSI hardware?

[nhbilly]

might just need to reassign channel or ID for ur drives.

[johnnymk]

The Plextor reader and the Yamaha writer are recognized. I am using ID numbers 5 and 3 with an external terminator in the box, ID 7

[nhbilly]

can you boot into your SCSI BIOS and let the card scan the drive to see if there are problems?
I am assuming you have the 50pin SCSI drives.

try using different ID.



man, I have yet to run into any SCSI problem, knock on wood!

okay so if the hardware is recognize, could it be the software?

[johnnymk]

Maybe I should have mentioned that it's a laptop with an Adaptec PCMCIA 1450 adapter. I am using CDRWIN to copy CDG discs. It actually starts the burn, but after 2% or so, I get an error code: Read/Write Error or Bad medium. I have tried different brands of media, I have slowed the burn rate from 8X to 6X, messed with the cache size ,etc.
Changing the SCSI ID number shouldn't affect anything, should it?

[nhbilly]

i though u had a desktop. my bad.

most likely its software issues.
try nero?

[johnnymk]

I don't believe that NERO or any other programs will burn CDG discs

[nhbilly]

i guess u alreay try the latest CRWIN,
are u trying from disc to disc copy?
how about having the source cache to hardrive then copy to CD.
try that yet?

[johnnymk]

Yes, that will work, but the reason I have a separate reader and writer is to save time.
I already use the same SCSI reader but an IDE 8X writer and I direct burn with absolutely no problems. I think it's a SCSI related issue.

[nhbilly]

hmmmm..........i'm stump

[johnnymk]

I borrowed a CD burning program called NTI- CDMaker? from a friend. It had a 'Frequently Asked Questions' section. It stated that if you have a SCSI hard drive and a SCSI writer to use two separate host adapters.(Two SCSI cards?). Maybe transfer rates between SCSI devices are critical?

[nhbilly]

thats weird.
I use to have a plex scsi writer and a read on same card burning CD without a problem.

And I have used almost ever Burning Software possible.

and i though transfer was synchronos on SCSI hardware, so transfer rate would not effect anything.

[johnnymk]

I think I figured it out. I was looking at the specs of the Adaptec 1450 adapter for my laptop. The low density SCSI 1 cable permanently attached to it is only capable of transferring maximum 2 MB per second. That is equivalent to approx. 13X.
I changed the write speed to 6X and the read speed to 8x. It didn't work. Therefore, I changed the write speed to 4X and it direct burned OK.
I will be getting a 1460 adapter for my laptop which can transfer up to 10 MB per second utilzing a Hi-density cable. That should solve the problem.

[nhbilly]

D@mn all this time its a freaken cable.
Something new i learned today, thanks.
in term it is true SCSI are sensitive to cable type use no wonder they are so expensive.

[johnnymk]

Well, I got the 1460 adapter. It didn't make any difference whatsoever. I started reading up on the various Adaptec adapters. After much research, I discovered that the 1450 and the 1460 is ISA 16 bit based, while the CardBus related 1480 is 32 bit PCI based.
I found a 1480 card on EBAY and will be receiving it within a week. I will let you know if I can do direct copying at 8X.

[nhbilly]

coo, let me know.

[johnnymk]

I received the 1480 card today, hooked it up to the hardware and BAAMMMM!!... It works!!! I can read and write directly. Total elapsed time.. 8 minutes... not too shabby!!

[nhbilly]

hmmm thanks for the input......
SCSI laptop..yummy!