I have a Gateway 300 that came with a 6.4 gig hd. Last year I bought a Maxtor 20 gig. The 20 is my primary, 6.4 slave. I also have a DVD and CDRW on the other port. I just bought a Western Digital 30 gig. I plan on removing my 6.4 gig and using the WD as the slave to the Maxtor. When I first tried to install the Maxtor (last year) I installed it before using the boot disk that it came with. After 2 weeks of troubleshooting I finally got it to work. The WD says to install and then use the disk (opposite of the Maxtor). I'm afraid if I do this, it will screw up my Maxtor. Has anyone done this before and can anyone offer advice?