Well, most motherboards use S.M.A.R.T. testing to monitor possible problems on the horizon. If your mothereboard has it, I would reccomend enabling it in the BIOS. Also, most harddrive manufacturers have a downloadable software test (creates a bootable floppy) to test the harddrive with........and they usually run in a DOS environment. What motherboard and harddrive do you have? What problem are you having to make you want to test it? I hope it hasnt already been BORKED.
Well, that came with either a Fijitsu 20 gig drive, an Ibm 30 gig, or a Toshiba 30 gig. Fijitsu Link
As far as I could see, the others didnt offer a specific utility to diagnose thier drives.
But you still havnt said what the problem is thats making you want to check the drive out.
Also, whats the operating system?