On Sun, 02 Jan 2000, Adam Mackler wrote:
> Hi:
>
> I have a couple questions related to booting my FreeBSD
> system from a CD-ROM:
>
> First, is "El Torito" the only way to boot from a CD-ROM?
It is the only way to have the BIOS boot from CD-ROM. The
floppy disk image is necessary as the El Torito mechanism is
a way of making the BIOS see the image as a normal boot floppy.
> Is there some way to use disklabel to make the ISO9660
> filesystem bootable, so that /boot and /kernel can just
> go in the CD-ROM filesystem, rather than being embedded in
> the image of a floppy disk?
I may be completely wrong here, but I think this is what the
boot -C does. By this stage the BIOS part of the boot is
passed, and there is no reason why software (like the bootstrap
loader) cannot do the necessary tricks to boot from a CD-ROM
as though is it a root filesystem.
Unfortunately, `man boot' doesn't shed much light here, but I
seem to remember booting live filesystem CDs before using boot -C.
--
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