HFS BOOT DRIVER
It may be possible to make the hybrid CD bootable on a Macintosh.A bootable HFS CD requires an Apple CD-ROM (or compatible) driver, a bootable HFS partition, and the necessary System, Finder, etc. files.A driver can be obtained from any other Macintosh bootable CD-ROM using the apple_driver utility. This file can then be used with the -boot-hfs-file option.The HFS partition (i.e., the hybrid disk in our case) must contain a suitable System Folder, again from another CD-ROM or disk.For a partition to be bootable, it must have its boot block set. The boot block is in the first two blocks of a partition. For a non-bootable partition, the boot block is full of zeros. Normally, when a System file is copied to a partition on a Macintosh disk, the boot block is filled with a number of required settings - unfortunately I don't know the full spec for the boot block, so I'm guessing that the following will work OK.Therefore, the utility apple_driver also extracts the boot block from the first HFS partition it finds on the given CD-ROM, and this is used for the HFS partition created by mkisofs.