Im a big fan of Victoria, cant be bothered to boot dos every time 😀. Sometimes I use Victoria HDD to do full scan with sector speed statistics. But if it shows reallocated sectors, hardware errors or something like that in red, that disk is no good) sometimes shows in red when the disk exceeded some temperature, maybe you can ignore that. Remember that you can do SMART tests on multiple disks at a time, so testing 4 disks on a motherboard takes about the same time as testing the bigger one alone. Any disk that passed the short test is worthy of the heavier testing (i.e.: MHDD or the extended test). Reject any disk that fails the short test. You can test more than one disk at the same time, that will save you much time. Open every disk and reject any disk that shows the 'Attributes' tab in red (that means that some attributes show that the disk is going to fail). Open gsmartcontrol and reject any disk that shows as failed. Use a bootable linux with gsmartcontrol. Make one or more custom PCs maxxed with hard disks (i.e.: connect all ports, 4 HDD per motherboard). Keep in mind that MHDD can not test more than one disk at a time.