I have a strange situation here I can't figure out. I just upgraded my motherboard and CPU from AMD 800 classic to AMD XP 1800+. All the rest of my hardware configuration has not changed from where it has been for awhile. I have two hard drives, a CDRom and a CDRW. The C drive is the primary master and the CDRW is the primary slave. The CDRom is the secondary master and the D drive is the secondary slave. It has worked just fine this way. But now with the new motherboard and CPU, the system will not "see" both of the secondary drives. It will recognize either the CDRom or the second hard drive (D), but not both. I have never experienced anything like this before. Anybody out there have any ideas?

In the BIOS, make sure all IDE devices are set to AUTO. Then check in Device Manager. Click first entry in Hard Disk Controllers, which will be for PCI BUS Master IDE Controller Click Properties and then Settings ( this will only be available if you have standard Windows IDE drivers installed ) In Dual IDE Channel Settings, choose "BOTH IDE Channels enabled" Have you installed the chipset drivers for your motherboard ( from CD that came with mobo )

Agree with Krystyna. Also, it's usually better to have the C and D drives on the same channel as primary master and slave and the CD drives as secondary master and slave. The reason for this is that each channel is limited by the slowest device connected to it, so if you put one of the CD drives with a hard drive it will result in very slow response times from the hard drive. The only problem with having the CD drives on the same channel is that there can sometimes be trouble making a direct CD to CD copy. You can overcome this by setting software settings to copy to a hard drive first - in fact many CD burners do this by default. Another solution is to give each device its own channel by buying a PCI controller card which will give you two extra EIDE channels. They're usually about $30.