I'd look at CLONEZILLA. Here's a word about sector by sector copies.
"For unsupported file system, sector-to-sector copy is done by dd in Clonezilla."
I'm trying to back-up our office DVR system that came with some very expensive software (and the warranty on it has already expired.)
So I bought identical hard drives (to the ones installed -- 3 total) so now I need to make one-to-one copies from the originals. My idea was to hook each drive pair (original and backup drives) to my other Windows 7 desktop and do the copy, but what software shall I use?
(Again, all I need is just a 1-to-1 copy because the source and destination drives are identical.)
Thanks in advance!