I've had an internal 80 GB IDE hard drive in storage for a while. I suspect I had had problems with it before and that's why I stopped using it, but I don't exactly remember anymore. The thing is, I've been needing some extra hard drive room recently.
I dusted off the hard drive, connected it to a LaCie Firewire enclosure and mounted it on the desktop. I zeroed all data and ran Diskwarrior on it. Everything seems to check out. But are there any other tests I can run that will give me reasonable assurance that the drive is good? And in that case, how could I distinguish between a problem with the enclosure and the actual hard drive?