im gonna buy a new mainboard, but it has only one IDE slot.
now my question is can i put a hard drive and a cd/dvd-rom device together on one IDE cable.
if this is possible what would be the best jumper settings on my hdd and CD/DVD device?
A single IDE channel can utilize two devices. You can make the hard drive the master and the dvd a slave.
Why even bother with the IDE? All new mobo's have SATA ports. Unless you need that old hardware, I'd replace it with newer SATA devices, at least the hard drive as it will be much faster.
ESPECIALLY for the hard drive. If you have an old IDE CD or DVD that you want to keep, it's not as big of a deal (for a single device there should be jumper settings either on a lable on the device, or google it). But the SATA HDs are way faster than IDE.
Yes, any IDE port can support two devices as long as you have the ribbon cable with three connectors. The BLUE one on one end goes to the mobo port. For the rest, see my post in this thread on how to set jumpers.
Which make/model motherboard are you getting? It should have SATA ports in addition to the IDE port. Also, SATA3 ports can run SATA 1 and SATA 2 drives. There is no need to by a more expensive SATA 3 drive.