CD burning software

[James Olin Oden]

On Tue, 2 Dec 2003, Chris Adams wrote:

> Once upon a time, James Olin Oden <joden at malachi.lee.k12.nc.us> said:
> > Actually, I believe ISOLINUX is still doing the "El Torrito" Bootable
> > floppy image thing, but the image contians a "syslinux" boot loader smart
> > enough to read from the cdrom drive to get its configuration.
> 
> SYSLINUX doesn't know how to read from CDs.  ISOLINUX is different; it
> does not use a bootable floppy image, however it still uses the El
> Torito extensions (it doesn't know how to read from the CD itself).
> 
> El Torito specifies several BIOS extensions for booting from CD; the
> most commonly used (and most commonly supported) is to put the image of
> a bootable floppy and have the El Torito extension read it and emulate a
> floppy drive.  Some computers that support El Torito extensions only
> support booting from a floppy image.
> 
> ISOLINUX uses a "no emulation" mode, where BIOS INT13 calls can be used
> to read blocks from a CD (more or less like reading from a hard drive in
> real mode).  ISOLINUX does know how to read a basic ISO9660 filesystem
> to find the files.
> 
> Not all computers that support booting from a floppy image will boot
> from a "no emulation" CD, but most do.  IIRC, for RHL9, the second CD
> was also bootable, using a floppy image for the computers that didn't
> support the other way.
>
Thanks for that explanation.  Some things that were mysteries to me are 
now explaned.

Cheers...james 
>