The hard drive's manufacturer should have a diagnostic utility you can download, copy/install to a floppy, and configure the hard drive for use.
Western Digital
Data Lifeguard
Seagate
SeaTools Diagnostic Suite
Maxtor
PowerMax
Hitachi
Drive Fitness Test
How old is the computer? The motherboard & bios may not be new enough to support large hard drives if it is a PII or possibly a PIII. If the computer is more recent, and I expect it is, the bios may need to be updated or at least set to an automatic detection setting for the hard drives.
*Edit* reread and noticed the Seagate and also realized that the drive jumper may not be set properly for its placement in the system. There will be a small electrical jumper next to the cable connection and power supply connection. This jumper needs to be properly placed to set the drive as either a Master (primary) or a Slave (secondary) for that cable. If this is the only hard drive on the cable, then it needs to be set either as a Master, a single, or have the jumper removed. There should be a diagram on the drive describing this position.