| DOSBOOT(8) | System Manager's Manual (x86) | DOSBOOT(8) | 
dosboot —
| dosboot | [ -u] [-ccommand] [-i]
      [path [-adqsv]] | 
dosboot is an MS-DOS program. It is a boot loader for
  NetBSD/x86 designed to permit
  NetBSD to be booted directly from MS-DOS. By default,
  it boots a file with name NETBSD in the current MS-DOS
  directory. dosboot shares common code with the
  standard boot loader,
  x86/boot(8).
The recognized options are:
-c-idosboot will present a
      prompt, allowing input of commands (see below).-u-u or after a mode
      ufs command), a path in a NetBSD file
      system is expected. By default, the file is looked up in partition
      ‘a’ of the first hard disk. Another device or partition can
      be specified by prepending a block device name in terms of
      NetBSD, followed by a colon (see
      x86/boot(8) and
      examples).-1234abcdmqsvxzSee x86/boot(8)
    for commands accepted after the -c flag or in
    interactive mode.
dosboot is also installed in the
    release(7) hierarchy,
    under installation/misc/dosboot.com.
dosboot D:\NODOS\NETBSD
To boot from a NetBSD floppy into single user mode, type e.g.:
dosboot -u fd0a:netbsd -s
dosboot command
  first appeared in NetBSD 1.3.
dosboot assumes that the processor is in real mode at
  startup. It does not work well in the presence of MS-DOS extenders and memory
  managers.
dosboot does not run directly under
    Windows 95.
In UFS mode, files can only be loaded from devices known to the BIOS. The device names do not necessarily comply with the names later used by the booted NetBSD kernel.
In MS-DOS mode, no useful boot device specification is passed to NetBSD. It is necessary to have the root device hardwired into the kernel configuration or to enter it manually.
| February 17, 2017 | NetBSD 10.0 |