I recently fitted a new 54x Artec Cd-Rom drive and with my 32x Cyberdrive writer was copying full 80 min VCDs in about 3 - 4 minutes. I was obviously quite pleased with this performance.

However in the past few days my copying time has increased to 8 -9 minutes and seems to be because the DMA setting for the CD-Rom has reverted to PIO only. When I first installed it it was DMA enabled - I checked. No matter how many times I try to enable DMA again it stays at PIO only.

Any ideas why the drive should be happy with DMA enabled and then revert to PIO and how I might resolve this problem?

My cd-rom is a slave to my C drive and the writer is secondary master to my second hard drive. I'm running XP Pro.

stevief

I hadd the same prob. Well u could try go to device manager , open ide/atapi controller and uninstall the primary or secondary which ever one contains the cdrom and then scan for hardware changes. That fixed my problem.

I am having the same exact problem~ I am on Windows XP and this just happened 2 days ago...it was working fine and now it is not. Does anybody else have any suggestions?

Guys - I have just used System Restore in XP to go back to a date when everything was working fine - and hey presto DMA is enabled again!

I recommend you give it a go and hopefully you'll have the same results. Could this be another XP bug?

Ok, I did the System restore and I went back to the ide/atapi controller, my DMA is on the "Secondary IDE Channel". When I open it up under "Advanced Settings", Device "O" has DMA enabled, however, Device 1 has PIO mode under "Transfer Mode" and it can't be changed. This is really weird. My burner worked fine a few days ago and now its not working...go figure.

Any other thoughts?

APK876 - this is precisely the same problem I had - have you tried going to an earlier date with System Restore? I took mine back about a fortnight when I knew I had no problems.

Mine does it from time to time in Xp also....I just go into my Device Manager and uninstall my secondary IDE channel(the one with my dvd and cdrw drives on) and then I restart and let XP find the new hardware and install the drivers....DMA is enabled again

Gets alittle frustrating when it occurs.....I havent really figured out what causes it yet