sys

Make a floppy disk or hard disk bootable.

  sys [[d:]path] d: [bootsect [BOTH]]

Options

  [[d:]path]
  The (optional) location of the system files.
  If not given, the current directory is assumed.

  d:
  The drive to make bootable.

  bootsect
  The name of file, to which the 512-byte boot sector image
  will be written.
  (the drive's real boot sector won't be
   written to unless BOTH is used.)

  BOTH
  The new boot sector will be written to the image file
  and to the actual drive boot sector.