cable select, master/slave oddness.

why not just make them master and slave then?

Make sure the BIOS in that dell is up to date as well.

Also, some Dells require you to go into the BIOS and save the settings for the drives to be detected after installation. Each time. Every time. You may even have the secondary IDE as Disabled in the BIOS (I hope you checked this…)

Good luck :slight_smile: