title: XDOS
text: # XDOS
  
  XDOS may refer to:
  
  * Cromemco XDOS, a diagnostic and bootstrap program for the Cromemco XXU.
  * Pat Villani's XDOS, an early predecessor to NSS-DOS, DOS/NT, DOS-C and the FreeDOS kernel
  * XML denial-of-service attack
  