USB boot with serial console

[campbellia]

I am attempting to boot inquisitor from a headless server. The only access that I have is through a serial console. I have successfully created a bootable USB using the instructions here: http://track.inquisitor.ru/issues/show/35 , but I cannot get GRUB to load over the serial connection. I see a syslinux header and then, the system becomes unresponsive. I have tried modifying the menu.lst file by appending serial to the options. This did not work. Then, I un-squashed the filesystem and changed inittab to force connections back to serial. Neither one has been successful. Help!

My menu.lst file looks like this:

serial --unit=0 --speed=9600 --word=8 --parity=no --stop=1
terminal --timeout=15 serial console

default 0
timeout 30

title Inquisitor 3.1beta LiveCD amd64
kernel /live/vmlinuz-2.6.26-2-amd64 boot=live noautologin nolocales hostname=inq union=aufs console=tty0 console=ttyS0,9600n8
initrd /live/initrd.img-2.6.26-2-amd64

title Inquisitor 3.1beta LiveCD amd64 (fail-safe mode)
kernel /live/vmlinuz-2.6.26-2-amd64 boot=live noautologin nolocales hostname=inq union=aufs noapic noapm nodma nomce nolapic nosmp vga=normal console=tty0 console=ttyS0,9600n8
initrd /live/initrd.img-2.6.26-2-amd64

title Other:
root

title Memtest86+
kernel /live/memtest

Also, my inittab in the squashfs looks like this:

# /etc/inittab: init(8) configuration.
# $Id: inittab,v 1.91 2002/01/25 13:35:21 miquels Exp $

# The default runlevel.
id:2:initdefault:

# Boot-time system configuration/initialization script.
# This is run first except when booting in emergency (-b) mode.
si::sysinit:/etc/init.d/rcS

# What to do in single-user mode.
~~:S:wait:/sbin/sulogin

# /etc/init.d executes the S and K scripts upon change
# of runlevel.
#
# Runlevel 0 is halt.
# Runlevel 1 is single-user.
# Runlevels 2-5 are multi-user.
# Runlevel 6 is reboot.

l0:0:wait:/etc/init.d/rc 0
l1:1:wait:/etc/init.d/rc 1
l2:2:wait:/etc/init.d/rc 2
l3:3:wait:/etc/init.d/rc 3
l4:4:wait:/etc/init.d/rc 4
l5:5:wait:/etc/init.d/rc 5
l6:6:wait:/etc/init.d/rc 6
# Normally not reached, but fallthrough in case of emergency.
z6:6:respawn:/sbin/sulogin

# What to do when CTRL-ALT-DEL is pressed.
ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now

# Action on special keypress (ALT-UpArrow).
#kb::kbrequest:/bin/echo "Keyboard Request--edit /etc/inittab to let this work."

# What to do when the power fails/returns.
pf::powerwait:/etc/init.d/powerfail start
pn::powerfailnow:/etc/init.d/powerfail now
po::powerokwait:/etc/init.d/powerfail stop

# /sbin/getty invocations for the runlevels.
#
# The "id" field MUST be the same as the last
# characters of the device (after "tty").
#
# Format:
#  <id>:<runlevels>:<action>:<process>
#
# Note that on most Debian systems tty7 is used by the X Window System,
# so if you want to add more getty's go ahead but skip tty7 if you run X.
#
2:23:respawn:/sbin/getty 38400 tty2
3:23:respawn:/sbin/getty 38400 tty3
4:23:respawn:/sbin/getty 38400 tty4
5:23:respawn:/sbin/getty 38400 tty5
6:23:respawn:/sbin/getty 38400 tty6

# Example how to put a getty on a serial line (for a terminal)
#
T0:23:respawn:/sbin/getty -L ttyS0 9600 vt100
T1:23:respawn:/sbin/getty -L ttyS1 9600 vt100

# Example how to put a getty on a modem line.
#
#T3:23:respawn:/sbin/mgetty -x0 -s 57600 ttyS3

inq:2345:respawn:/usr/bin/inq-live-wrapper