From: terje.mathisen@nospicedham.tmsw.no   
      
   Kerr-Mudd, John wrote:   
   > On Wed, 4 Jan 2023 02:15:58 -0800 (PST)   
   > Etienne Marais  wrote:   
   >   
   >> I have studied most of the commands and features available in debug.exe   
   now, but I am curious to why and when one would like to make use of the w   
   'write' version where you can specify the start sector of the disk. Is this   
   for very low level stuff only    
   ?   
   >>   
   > Yes. I used to use it to edit floppy disk bootsectors. (we'd get some   
   > boot sector viruses come in at times).   
      
   I once fixed a laptop over a sat phone link to an oil engineer working   
   somewhere in a Middle East desert: The Master Boot Record (MBR) had been   
   scrambled by a bad software crash, but I was able to get him to boot up   
   with a Dos floppy, enter DEBUG and then enter commands to load & list   
   that MBR, figure out what was wrong (I was looking at a similar laptop   
   in Oslo) and tell him how to enter hex bytes, verify them and then write   
   them back to the hard disk.   
      
   His PC booted again on the first try. :-)   
      
   Terje   
      
   --   
   -    
   "almost all programming can be viewed as an exercise in caching"   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)