Hi, I recently bought a second hand pc and have tried to instal my old HD as a slave. The master HD is a Seagate ST320420A (20gb) The slave is a Seagate ST380012A (80GB) I have set the jumper settings on both as per the info on the seagate site (http://www.seagate.com/support/disc/ata/st320420a.html) but it doesn't seem to register in "My Computer" and when I go into the bios it says no slave is installed. This is the first time I have had a go at upgrading/dealing with internal hardware so Im not 100% sure what Im doing is correct. e.g. Does the slave need to have a cable going into the 4 larger pins next to the jumpers? Can someone talk me through it please as Im going nuts? Im obviously making some newbe mistake. Thanks.