[dnanian]

No, we don't perform a separate verify pass: it's done by the drive controller when data is written to a hard disk. If the write fails, you're notified.

(Think about it this way: when you save a photograph in Photoshop, do you have Photoshop "verify" the data it wrote? No -- because if it had a problem writing, you'd get an error. Same thing with SuperDuper...)