SATA or IDE (PATA). Let's guess IDE. If so, and you connect to the same cable as your primary drive, you either have to set one to master and the other to slave or just set both to cable select as long as you're using an 80 conductor cable. As well, you can interrupt the POST and see if it is detected in the BIOS. If it is but Windows Explorer doesn't see it, this usually means it doesn't have a recognized partition. In this case, you go to disk management (through control panel/Administrative tools/computer management) and find the drive there. If you see it, you need to partition and format the drive. Once this is done and it has a drive letter, Explorer will see it. Good luck.
i have a used hard drive that a friend of mine gave me.Its a maxtor 80gig and i really need the extra storage but when i installed it my pc "sony vio" won't show it in my computer.i have been trying to get this to work for weeks now and i think i have the jumpers and cables set up right. Is there a setting in bios or somthing that i need to change in order for my comp to see its there, or do i need to format it?Please help!!!running out of storage!!!