syslinux.cfg:
serial=0,9600n8
# default: yast2
label linux
  kernel linux
  append initrd=initrd rw 2 ramdisk_size=65536 linuxrc=auto
console=ttyS0,9600n8 console=tty0

# I'm assuming that syslinux.cfg is similar to lilo.conf but I can't find any
# corresponding documentation.
# Has anyone used Alice/AutoYast/ SuSE  with serial console setups for
# installation ?
# RedHat supports it ! ( hint .. Hint ) .

http://lists.suse.com/archive/suse-autoinstall/2002-Oct/0011.html
  One persons auto-install expericne with autoinstall 
  Coppied rpm's from DVD to nfs server, 
  Setup config repositor on nfs server using the Autoinstall module for Yast2 to create the control files.  
  Created Boot Floppies frop /disks/bootdisk on the DVD, 
    adding netwrok info file  and initial nfs netwrok info.
Step 1:
 nfsserver:#  cat/etc/exports
      $Install_root/        $target_ip(ro)
 nfsserver:#  /usr/sbin/exports -rv   
 nfsserver:# cat /etc/hosts.allow
      portmap:$target_ip
 nfsserver:# /etc/rc.d/nfsserver restart
 
Step 2:
 Create floppy disks containing the info file from a workstation
 workstation:# scp $user@nfsserver:$Install_root/disks/bootdisk .
 workstation:# mount -oloop bootdisk /mnt/bootdisk
 workstation:# ls /mnt/bootdisk
    total 1428
    drwxr-xr-x    2 root     root          512 Dec 31  1969 .
    drwxr-xr-x    5 root     root          128 Sep 25 16:18 ..
    -r-xr-xr-x    1 root     root        11912 Apr  3  2002 ldlinux.sys
    -rwxr-xr-x    1 root     root       964815 Apr  3  2002 linux
    -rwxr-xr-x    1 root     root          523 Apr  3  2002 message
    -rwxr-xr-x    1 root     root       399010 Oct  2 18:14 small
    -rwxr-xr-x    1 root     root        81988 Apr  3  2002 suselogo
    -rwxr-xr-x    1 root     root          600 Oct  2 18:16 syslinux.cfg

 NOTE: file "small" is the file  "initrd". SuSEizm
 
 # add an info file to the root of small (ram disk)
directory of this ram disk. 
 workstation:# cp /mnt/bootdisk/small .
 workstation:# zcat small > small.tmp
 workstation:# mount -oloop small.tmp /mnt/small
 workstation:# cat info
     insmod    tulip #or the necessary network driver for your target machine.
 workstation:# cp info /mnt/small 
 workstation:# umount /mnt/small
 workstation:# gzip -9 small.tmp
 workstation:# cp small.tmp.gz /mnt/bootdisk/small  #make sure to overwrite old small file
 workstation:# cat /mnt/bootdisk/syslinux.cfg
   --snip--
    label linux
    kernel linux
    append initrd=initrd ramdisk_size=65536 rw netdevice=eth0 \
    server=x.x.x.a serverdir=$Install_root ip=x.x.x.b \
    netmask=255.255.255.0 gateway=x.x.x.c nameserver=x.x.x.d \
    autoyast=nfs://x.x.x.a/$Install_root/$control_file instmode=nfs
   --snip--
 workstation:# umount /mnt/bootdisk
 workstation:# dd if=bootdisk of=/dev/fd0

# In the documentation "command line" referes to 
#  the "append" entery in syslinux.conf. 
# I finally gave up the info file and decided to enter all the 
#  information on the "command line" in syslinux.cfg (see above).  

#syslinux.cfg should've looked like this -- 
#  autoyast=nfs://x.x.x.a/$Install_root. 

Step 3: Create the control file.
 Use the autoinstall module for yast2 tocreate control files. 
 Here is a snippet from my control file:
     <partition>
      <crypt_fs config:type="boolean" >false</crypt_fs>
      <crypt_key></crypt_key>
      <filesystem config:type="symbol" >swap</filesystem>
      <filesystem_id config:type="integer" >131</filesystem_id>
      <format config:type="boolean" >true</format>
      <mount>swap</mount>
      <size>1.0GB</size>
      <type>Linux native</type>
     </partition>
Next, I wrote a post-install script to add users to the system using
useradd.


====================================================================
# Command line that linuxrc uses
 cat /proc/cmdline
    auto BOOT_IMAGE=linux ro root=302 hdd=ide-scsi
http://www.suse.de/~nashif/autoinstall/linuxrc.html