Windows 7: Windows 7 is only seeing one removable hard drive

Hi, I have a c drive with the programs on, and have installed 2 removable (in caddie trays) hard drives from my old computer. These are already numbered d and e. However windows 7 on my new computer will only see one of them. It sees either one if only one is plugged in, although it calls both of them d drive. It will see either disk on the end of either ribbon cables, but if they are both plugged in - it still only sees one. There are no dip switches to swith on the drives, and they both work fine when in my old computer which runs XP.

Any help or suggestions??? Thanks

Welcome to the Forum Chatterbox.

Some additional information would be helpful. Also, by filling in your "System Specs" in your profile it makes it easier for people to help you.

When you say you "have installed 2 removable (in caddie trays) hard drives" , does this mean you have an external enclosure connected by USB or eSATA?

Are these 2 drives in the caddy IDE drives or SATA drives? (When you mention a ribbon cable it indicates that these are older IDE drives.)