I use TeraByte Unlimited's Image for DOS 1·51c as it produces error free images every
time.
Just download the program, and tbiview.exe so that you can view the .IMG file and
extract something if you ever need to, and add it to a Windows Start-Up bootdiskette.
Add tbiview to your system ON the C: drive.
If you don't have another drive just make the copy to CDRs.