I have a Dimension 2350. Bios A 4.3.79. There is a WD IDE drive. Local Disk C:  XP Media Ed.

I installed a Seagate 250 SATA, jumpered to <> 1.5G. through a Vantec PCI.  Local Disk D:

I finally got a copy of XP Media on to the Seagate, reloaded all the drivers, Office 2003, IE7 etc

 

When I reboot I can select either OS copy and either copy runs fine.

 

IF I disconnect the IDE drive, the BIOS will not find the SATA.

In the BIOS there is the WD and another hard drive "Boot Add-in Card" I assume this is the PCI card. And in the boot selection it does show a "Hard Drive" option.

 

I can change the priority but the boot, doesn't get past the BIOS screen.

Thoughts Please