My PC was built in 2002/03 and has a 40 gig WD hd. My IDE cable only has a black master and grey slave plug harness, with the black obviously plugged into the WD. The jumper was set to CS. I installed Seagates Diskwizard to help with my install of the new hd since I've never done this before. Anyway I plugged the new 120 gig Seagate into the slave harness and put the jumper also on CS since my IDE only has the 2 connects. I spent a couple hours or so copying 20 gigs from my original hd to my new one since that is what Diskwizard asked to do when I booted up windows. It then gave me specific instructions to move the jumper on the old WD from master to slave.....well it was never on master it was on CS....regardless I moved it to slave, I then moved the new Seagate to Master from CS because it told me too....actually it said move from slave to master, but like I said I had both on CS. Well I tried all configurations and I still cant get it to boot from my new hd. I left it with the black harness plugged into the WD and the slave grey on the new SG. I also have both jumpers back on CS because my computer wont boot any other way. My computer recognizes the new drive and it shows the 20 gigs of memory I had transfered. I dont know why I transfered that stuff, I thought that's how I could get windows to load from setting the new hd as the boot up drive. Am I wrong assuming this? This is all new to me so please help me out.