Does anyone know of any freeware app that'll test the hell out of a hard drive? I need to test a drive on my Powermac that failed, and I don't have the original disks so I can't run Apple Hardware Test. I'm currently doing a 7-Pass write/erase in Disk Utility, but I still want something else. I just wanna make sure it won't fail right away again when I put files on it. Any recommendations?