30 Nov 16 08:43, you wrote to Kai Richter:

 KR>> If you have two floppy drives, they are usually /dev/fd0 and
 KR>> /dev/fd1

 KR>> dd if=/dev/fd0 of=/dev/fd1

 WV> You better add 'conv=noerrors,sync' to that if you want a better chance
 WV> to end up with a usable disk in case of read errors!

 WV> Or even better use 'ddrescue' if you suspect there will be bad source
 WV> disks...

Answering an old thread here, but Safecopy is also worth a look. I've used it
to copy scratched optical media, but the docs say it can also copy floppy
diskettes.

"safecopy is a data recovery tool which tries to extract as much data as
possible from a problematic (i.e. damaged sectors) source - like floppy drives,
hard disk partitions, CDs, tape devices, ..., where other tools like dd would
fail due to I/O errors."

http://safecopy.sourceforge.net/

In Ubuntu you can install it with "apt-get install safecopy".

--- GoldED+/BSD 1.1.5-b20160827