I would dare say that few of us here use DOS with NTFS readers to
service NT installations. You will have to follow Cliff's suggestion to
find a suitable reader. I haven't looked at those in quite a while but
in the NT4 days the free readers could only read, they couldn't
copy/move/edit files. Other than allowing one to see what was on the
disk they were next to useless! The full fledged NTFS for DOS was
pricey so many of us did without and used other methods to accomplish
repairs on broken NT installations. Maybe the free readers today are
more capable than they were then.
In any case, I suggest that you abandon your DOS diskettes altogether!
There are other, better tools to use instead of DOS. You can use the
Recovery Console, a Bart's PE disk or an Ultimate Boot CD for Windows,
to name a few.
John