MKSUNBOOTCD(8) BSD System Manager's Manual MKSUNBOOTCD(8)NAMEmksunbootcd — combine filesystem for Sun Microsystems, Inc. computers for
creating bootable compact discs images.
SYNOPSISmksunbootcd [-c cylsz] [-d] [-v] filesystem sun4 sun4c sun4m sun3|sun4d
sun3x|sun4e
DESCRIPTION
The mksunbootcd program combines filesystem partitions for Sun Microsys‐
tems, Inc. computers into an image suitable for writing to a compact
disc, that will allow the disc to be booted on the sun3, sun3x, sun4,
sun4c, sun4m and sun4u platforms. This hardware is supported by the
NetBSD sparc, sparc64 and sun3 ports. The architecture arguments above
must be the bootable filesystem images for the named architecture.
filesystem is typically an iso9660 filesystem, see mount_cd9660(8) for
details, but can be any type as long as the first 512 bytes of the image
are not used. This image is modified, and the additional partitions
added after this partition, in order. If any architecture image is miss‐
ing, that partition is not used. If a disc with sun4 and sun4m support
only was to be created, a dummy image would need to be in place for
sun4c.
If the same boot image maybe used for multiple architectures (as the Net‐
BSD/sparc ports for sun4, sun4c and sun4m allow), the same bootfile can
be listed multiple times on the command line. The mksunbootcd program
will detect this and only write one copy of the boot image.
NOTES
For the UltraSPARC line of computers, the PROM decodes a file in the
first partition of the CD-ROM, which must be an ISO9660 file-system,
called .slicemapfile. The format of this file is an “m” followed by a
partition number, starting at offset 0, plus an architecture identifier,
such as “sun4c” or “sun4u”. The UltraSPARC uses the “sun4u” partition as
it's boot partition. An example file that would be compatible with older
hardware would look like:
m 1 sun4
m 2 sun4c
m 3 sun4m
m 4 sun4d
m 5 sun4u
As such, to enable UltraSPARC booting, such a file must be present on the
image before mksunbootcd adds bootable partitions to the image.
OPTIONS
The following options are available:
-c The -c option sets cylinder size for this cd to cylsz, which must be
a multiple of 4. The default cylinder size is 640.
-d The -d option turns on debugging output.
-v The -v option turns on verbose output.
AUTHOR
The mksunbootcd program was written by Ignatios Souvatzis <is@net‐
bsd.org>, with some help from Matthew Green <mrg@eterna.com.au>, who also
wrote this manual page.
SEE ALSOnewfs(8), mount(8), mount_ffs(8).
BSD January 14, 1999 BSD
