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.