[comp.os.coherent] removing "Mark Williams"..the hard way

dprrhb@inetg1.ARCO.COM (Reginald H. Beardsley) (06/20/91)

Having been afflicted by this I know what the problem is and how to cure 
it (I THINK)  I HAVE NOT TRIED THIS, THERE MAY BE A GOTCHA!!!!!!!

1)  dd if=/dev/hd0 of=tmp count=1

2)  VERY carefully write over the Mark Williams message with blanks

3)  dd if=tmp of=/dev/hd0 count=1

You can read and write the boot sector as shown above with MKS Toolkit
under
DOS.  You can do it under Minix. (which is a bit safer since you can keep 
a standalone boot setup on floppies).  I presume you can do it under
Coherent.

THIS IS A VERY DELICATE OPERATION.  I WILL EVENTUALLY DO IT MYSELF, BUT
HAVE NOT GOTTEN UP THE NERVE YET SINCE IT IS NOT ESSENTIAL.  THE ABOVE MAY
BE WRONG.
TO FIND OUT MORE ABOUT THIS LOOK IN THE "DOS Encyclopedia" from Microsoft
Press
or "Writing MS-DOS Device Drivers in C" from Prentice-Hall.  

If anyone has done this, knows more about it, etc. PLEASE POST.  It is
very
obnoxious of Mark Williams to rewrite the bootblock without warning.  It
is
quite embarrassing to borrow a machine to use with Coherent and return it 
in munged condition with the "Mark Williams" message appearing everytime
the
owner boots the machine.

-- 
Reginald H. Beardsley       
ARCO Information Services
Plano, TX 75075           
Phone: (214)-754-6785
Internet: dprrhb@arco.com