Slow CD-Rom

[dlaw]

I have bought a new Delta CD-Rom, 48x, 50x max. I use it with my Lite On 24x. They are on the same channel. When I use that CD-Rom to read CDs, it seems to read really slow, even slower than using the Lite-on. When I burn a CD (on the fly), it takes almost 20mins. I have another computer with a 16x burner an a 16x DVD-rom, on the same channel, it burns in 6mins.

Any ideas? The new system with a Gigabyte 7ZXE mb, while the old motherboard has an Abit. Does it have anything to do with the ATA33/66/100 setting on the mb? Bad CD-Rom? Bad Motherboard?

 

[yomega]

Do you have DMA inabled? The BIOS setting should be ATA 33 for a CD-Rom. Also if you are doing 'on the fly' you really should put them on different channels.

What I would do is make sure DMA is on, if it is the put the drives on separate channels and do an 'on the fly' copy.
If it works then it may be that this CD-Rom doesn't like sharing the IDE channel.

 

[dlaw]

I have a new observation... the CD-Rom actually reads really fast sometimes, but sometimes it just slow down, and never speed up again. I can feel (and hear and see) the CD-Rom reading really fast sometimes, it reads a CD in like 2 mins. I can hear noise from the drive when it reads fast, but when the noise stops, the drive slows down, when it is slow, it takes 10 mins to read a CD.... how can this happen?

My motherboard provides me ATA33 or ATA66/100. And I turned on the UltraDMA setting of that channel the CD-Rom is using. I think sharing channel is not the problem, since slow reading occurs even when I am not doing on-the-fly.

Thanx for your help, any more ideas?

 

[Gunbuster]

Delta makes (or rebadges?) cheap drives, when I worked in best buy service they used deltas as extended warranty replacement parts if that tells you anything

Seems like if the drive hits a read error at high speed it slows down and retries, then just stays slow

 

[dlaw]

Oh man, that exactly what I think it does. Is there anyway that I can fix it? Like making more retries?