MKUSBBOOT(8)                                         MKUSBBOOT(8)

     NAME
          mkusbboot - generate bootable USB disk image

     SYNOPSIS
          mkusbboot [ -p proto ] [ -r root ] [ -s size ]

     DESCRIPTION
          Mkusbboot generates a bootable disk image, called image,
          from the filesystem at root (by default /n/boot), using the
          mkfs(8) prototype file proto and files in
          /sys/lib/sysconfig/usb.

          The image will be exactly size*1,000,000 bytes long.  By
          default, it will be 1,900,000,000 bytes long, so it should
          fit on so-called 2 GB USB devices.  When building from
          /n/sources/plan9, the image defaults to 900,000,000 bytes
          long, to fit so-called 1 GB USB devices.

          The image contains 9fat and fossil(4) file systems and is
          configured to be bootable as a CPU server with serial con-
          sole on 386 (with optional VGA) or amd64 machines, when
          copied to a USB disk.  There is an nvram partition, ini-
          tially zeroed.

     EXAMPLES
          Create a bootable USB flash drive from the local Plan 9
          installation.

               mkusbboot
               pump <image >/dev/sdU0.0/data

     FILES
          image             the resulting disk image
          /sys/lib/sysconfig/usb
                            plan9.ini and fossil.conf for the gener-
                            ated system
          /sys/lib/sysconfig/proto/stand-usb
                            default proto
          /env/objtype      architecture of the boot programs in the
                            disk image
          /tmp/9load
          /srv/fossil
          /srv/fossil.open
          /srv/fscons
          /srv/fscons.open  files created while executing

     SOURCE
          /rc/bin/mkusbboot

     SEE ALSO

     Page 1                       Plan 9             (printed 3/28/24)

     MKUSBBOOT(8)                                         MKUSBBOOT(8)

          usb(4), boot(8), diskparts(8), loadfossil(8), partfs(8),
          plan9.ini(8), prep(8)

     BUGS
          Due to name clashes in /srv, should be run only on machines
          with no running fossil instance named `fossil'.

          Not all BIOSes can reliably read from USB devices.  Your
          mileage may vary.

     Page 2                       Plan 9             (printed 3/28/24)