From: etienne.marais@nospicedham.gmail.com   
      
   On Wednesday, January 4, 2023 at 7:59:02 PM UTC+2, Terje Mathisen wrote:   
   > 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"   
      
   wow   
      
   I would feel proud as punch had I achieved that   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)