which ATA bus for CD copying

[Kuasimodem]

Most ATA100 and RAID controllers don't like removeable media. I would place the source CD drive on one of the onboard IDE controller channels, and the CDRW on the other, and put your hard drives only on the Promise controller card. That is the basic setup that I am using on my KT7-RAID, the only exception being that my ATA100 RAID controller is onboard.

The Promise disk controller will not interfere with the onboard IDE ports, unless there is an IRQ conflict, and that can be fixed by moving the Promise card to another PCI slot.

[sys-eng]

Is the UATA-100 bus on the motherboard still available if using a Promise disk controller?

If so, should the CD R/RW drive and the DVD and CD-ROM drives all be on the Promise controller or does it matter?

[SickPup404]

Depends on how you've got it configured if the m/b port(s) are still available. Try plugging in a drive to see if it's recognized...

I do know that you want to keep your read and write devices on separate channels (i.e. CD-ROM/DVD as primary slave, HDD as primary master, and CD-RW as secondary master). If you put the readers and writer on the same channel, you run the chance of a buffer under-run unbless you have a drive like Plextor with Burn-proof... Of course all this is moot if you have SCSI!

Hope it helps a little...