Dell Dimesion 3000 wont boot to D:

[mrbuffer545]

I don't see where I can boot to D: in BIOS? Is it possible?

 

[o1die]

If you have more than one drive, then you'll have to choose. I also sometimes just disconnect the secondary drive and add it after the system boots up. Windows can detect it in the device manager if you click on a small icon "scan for hardware changes". Then it will assign it as the secondary drive if it's sata, or if the jumper is in the slave position.