There are often several jumpers on the back of HDs, but only one is used to select Master, Slave or CS. So that is the one you set.

As far as an HD being in the slot, do you a bay slot where the drive itself goes? Or do you mean the cable connector slot? There usually is more than one drive bay, if not down at the bottom, then up on top near where a floppy might go.

Hi
There are about four bay slots,plenty of room. I do have a floppy which never use now. Maybe I can use that slot??
golfjack PS thank you for info re jumpers.

You cannot use the floppy slot. It is not compatible in size, number of pins, or protocols.

Most drives only have one jumper but older drives sometimes had two. It's not a problem to have different drives with different numbers of jumper connectors, as long as each drive is configured correctly, following Digerati's guidance above.

Incidentally, for the best performance, it's good to have the two hard drives on different cables. A common configuration is one hard drive containing the operating system in the Master position on the Primary IDE cable ("Primary Master") and a second hard drive containing your data such as music, photos, etc. in the Master position on the Secondary IDE cable ("Secondary Master"). You would then have your other peripheral, which I presume is a CD or DVD drive, at either Primary Slave or Secondary Slave positions. The ability to do this does depend on the length of your cables and whether the connectors can reach to the appropriate drives.

A common configuration is one hard drive containing the operating system in the Master position on the Primary IDE cable ("Primary Master") and a second hard drive containing your data such as music, photos, etc. in the Master position on the Secondary IDE cable ("Secondary Master"). You would then have your other peripheral, which I presume is a CD or DVD drive, at either Primary Slave or Secondary Slave positions. The ability to do this does depend on the length of your cables and whether the connectors can reach to the appropriate drives.

Before migrating my systems to SATA, this is exactly how I had all my systems configured.

Hi Digerati
I have taken the plunge and fitted the slave HD. All appears to be OK the computer recognises
the slave hD. Thank you for your valuable help.
Golfjack PS I will make a contribution(very worthwhile)

Thanks for your thanks, and your contribution is much appreciated.