USB CD boot and autoinstall (preseeding)

[Alexandre Conrad <aconrad.tlv@magic.fr>]

Hello,

I'm attempting to remaster a CD (xubuntu) and automate its installation 
for multiple identical installs.

First of all, I added the following to my isolinux/isolinux.cfg file 
with a new menu that would load my preseed/mediaplayer.seed file:

LABEL ks
  menu label ^Auto-install (preseed)
  kernel /install/vmlinuz
  append  locale=en_US console-setup/layoutcode=fr 
console-setup/variantcode=oss_latin9 
file=/cdrom/preseed/mediaplayer.seed initrd=/install/initrd.gz

So the BIOS correctly boots my CDROM, I do get the xubuntu splash 
screen. I then go down to the "Auto-install (preseed)" menu, and press 
enter.

The next thing is that it complains not finding the CD-ROM. Of course, I 
just booted from the CD to get the splash screen. I guess some USB 
module is not installed. So I press "continue".

Further, it proposes to load a driver from floppy, I select "no", then 
it asks if I want to load some cdrom driver, I say "yes", I choose 
"cdrom" from the choice list (choices: none, cdrom). Finally, I type 
"/dev/cdrom" as the device, although, I'm not even sure this is correct, 
as it normaly should be "/dev/scd0". At last, it finds the CDROM and my 
.seed file.

How can I make this step automatic? I guess I need to append extra 
argument parameters in my isolinux.cfg file... please help!

Regards,
--
Alexandre CONRAD