x86/DOS system backup via rs232?

Fri Nov 13 03:47:27 CST 2015

On Thu, 12 Nov 2015, Tom Moss wrote:
> I've never seen anything works on the sector level, but there are plenty of

There is DITU (Disk-Image Transfer Utility) for MS-DOS, and it's free 
including C source code. I use it e.g. to image the hard disk of a DOS PC 
into a file (either network or parallel ZIP drive).
ftp://ftp.oldskool.org/pub/misc/Hardware/IBM/PCjr%20magazines%20and%20resources/Software/Ditu/
I've modified the program a bit to support retries and TurboC.

Christian