by Bart Lagerwe » Thu, 07 Jun 2001 16:54:53
Hi all,
I'm a programmer and I know my stuff about creating all kind of bootable
CDs.
I already know howto create a bootable CD using a Linux "floppy image" in
BIOS or DISKEMU "floppy emulation" mode.
Does anybody know howto create a bootable linux CD, in "no emulation" mode.
Can Lilo be used in "no-emulation" mode, or some other loader?
Regards,
Bart.
--
Bart Lagerweij - http://www.nu2.nu
by Tauno Voipi » Thu, 07 Jun 2001 17:26:59
The bootable CD 'El Torito' specification is designed to run in floppyQuote:> Hi all,
> I'm a programmer and I know my stuff about creating all kind of bootable
> CDs.
> I already know howto create a bootable CD using a Linux "floppy image" in
> BIOS or DISKEMU "floppy emulation" mode.
> Does anybody know howto create a bootable linux CD, in "no emulation"
mode.
> Can Lilo be used in "no-emulation" mode, or some other loader?
The setup is a property of the BIOS CD driver, it has nothing to do when the
booted system is up and running. The specification tells how the emulation
can be turned off, but you have to have some other CD drivers in the memory
(from the emulated floppy image) before doing that.
Tauno Voipio
by Juergen Pfan » Thu, 07 Jun 2001 17:35:47
> Hi all,
> I'm a programmer and I know my stuff about creating all kind of bootable
> CDs.
> I already know howto create a bootable CD using a Linux "floppy image" in
> BIOS or DISKEMU "floppy emulation" mode.
> Does anybody know howto create a bootable linux CD, in "no emulation" mode.
...and many more options around creation of "El Torito" bootable CDS.
Sorry, don't know this one. I only burnt floppy-emulation CDsQuote:> Can Lilo be used in "no-emulation" mode, or some other loader?
HTH at least a little bitQuote:> Regards,
> Bart.
Juergen
by Bart Lagerwe » Thu, 07 Jun 2001 18:19:41
>> Hi all,
>> I'm a programmer and I know my stuff about creating all kind of
>> bootable CDs.
>> I already know howto create a bootable CD using a Linux "floppy image"
>> in BIOS or DISKEMU "floppy emulation" mode.
>> Does anybody know howto create a bootable linux CD, in "no emulation"
>mode.
>> Can Lilo be used in "no-emulation" mode, or some other loader?
>The bootable CD 'El Torito' specification is designed to run in floppy
>emulation mode - the only thing that can be booted from the CD is a
>floppy image. Point your favourite search engine to 'El Torito'.
No emulation mode is used by NT4/W2K and others like "diskemu.bin" to boot
from CD, without the need of some kind of floppy emulation. In this mode
the entire CD can be read using int13h/ah=42h (extended int13) calls.
Or... for Dos you can load diskemu.bin/eltorito.sys.Quote:>The setup is a property of the BIOS CD driver, it has nothing to do when
>the booted system is up and running. The specification tells how the
>emulation can be turned off, but you have to have some other CD drivers
>in the memory (from the emulated floppy image) before doing that.
More info on diskemu.bin and eltorito.sys can be found at:
http://www.nu2.nu/diskemu
by Bart Lagerwe » Thu, 07 Jun 2001 18:23:49
Yep, as I said: "I know my stuff about creating all kind ofQuote:>Excerpt of "mkisofs" man page :
> -no-emul-boot
> Specifies that the boot image used to create "El
> Torito" bootable CDs is a 'no emulation' image. The
> system will load and execute this image without
> performing any disk emulation.
> -boot-load-seg segment_address
> Specifies the load segment address of the boot
> image for no-emulation "El Torito" CDs.
> -boot-load-size load_sectors
> Specifies the number of "virtual" (512-byte) sec-
> tors to load in no-emulation mode. The default is
> to load the entire boot file. Some BIOSes may have
> problems if this is not a multiple of 4.
Try searching google with "how to create a bootable cd" any look at the #1
entry ;-)))
I need to know if there is any linux loader that can load linux completely
from the booted CD using "extended int13 calls"(int13h/ah=42h).
--
Bart Lagerweij - http://www.nu2.nu
by Bart Lagerwe » Thu, 07 Jun 2001 19:16:03
After some digging I found it:
ISOLINUX - http://syslinux.zytor.com/iso.php
--
Bart Lagerweij - http://www.nu2.nu
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