[syslinux] New MEMDISK-ISO

[H. Peter Anvin]

On 08/03/2009 08:01 PM, Miller, Shao wrote:
> For anyone wanting to boot an .ISO with MEMDISK:
> 
> http://git.etherboot.org/?p=people/andytim/syslinux.git;a=shortlog;h=ref
> s/heads/memdisk-iso
> 
> NOTE: Your protected-mode OS (Windows, Linux, *BSD) booted from such a
> MEMDISK will not magically find the MEMDISK image in RAM and use it as a
> CD without a MEMDISK driver.  There are currently 0 MEMDISK drivers in
> the field, but that might change someday.
> 
> NOTE: DOS is happy.
> 

Depends on the DOS image.  Using something like ELTORITO.SYS it'll work
(or an ISO with disk emulation.)  However, there are a lot of DOS out
there that use an ATA driver + MSCDEX.

> NOTE: An .ISO which itself loads a ton of stuff into RAM will
> effectively use twice as much RAM; once for the .ISO, then again for
> what gets loads from the .ISO into RAM for the to-be-booted OS.
> 
> H. Peter: If you feel like reviewing/merging, could I request that you
> cherry-pick the commits instead of merging?  That would help me to
> identify bugs in the future.  Thanks!

That's a bit of a strange request?  Normally a merge would be a lot
better.  If you want a clean string of commits, you probably want to
produce a rebased branch for me to merge instead...

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.