Hello, i just got a Zaurus 5500 last friday and have been hacking it a
lot and asking stupid questions on IRC.

Here's my first contribution to the community, a quick doc how to set 
up boot from SD using altboot. 
Thanks for CoreDump for the software and support on my first
installation. This doc uses scripts from root on SD howto. 
Feel free to edit and publish this howto on openzaurus web pages.

Altboot documentation can be found at:
http://hentges.net/misc/openzaurus/docs/altboot.shtml

Setup used while making this howto is a 5500 with 256mb SD card 
and 256mb CF card and OpenZaurus 3.5.3.

1. Get the 64-0 zImage from 
http://www.openzaurus.org/official/unstable/3.5.3/sl5000,sl5500/zImage-
collie-64-0-20050407102515.bin
you don't need the ram disk so use all internal ram as memory.

2. Flash.

3. Boot the system. Set up networking so you can ssh to the Zaurus (this
is not necessary if you enter commands locally and install files via 
memory card). 

4. SSH to zaurus, partition and format the SD card.

root <at> collie:~# umount /media/card
root <at> collie:~# fdisk /dev/mmcda

 ### create a single large partition and write to disk: ###
     Device Boot    Start       End    Blocks   Id  System
/dev/mmcda1               1        1933      247408   83  Linux

root <at> collie:~# mkfs.ext2 /dev/mmcda1
root <at> collie:~# mount -t ext2 /dev/mmcda1 /media/card/

5. Create and format a image file to boot from (a ext2 image on 
ext2 partition):

root <at> collie:~# mkdir /media/card/boot-images
 ### you can set the image size with count parameter in kb. This creates
  a 150mb image file: ###
root <at> collie:~# dd of=/media/card/boot-images/opie-rootfs.bin
if=/dev/zero bs=1024 count=150000
root <at> collie:~# mkfs.ext2 /media/card/boot-images/opie-rootfs.bin

6. Mount the image

root <at> collie:~# losetup /dev/loop0 /media/card/boot-images/opie-
rootfs.bin
root <at> collie:~# mkdir /media/image
root <at> collie:~# mount -t ext2 /dev/loop0 /media/image

7. Install the rboot scripts from root on SD howto:

root <at> collie:~# wget
http://mysite.verizon.net/~dfsteen/rboot-3.5.3.tar.gz
root <at> collie:~# gunzip rboot-3.5.3.tar.gz
root <at> collie:~# tar xvf rboot-3.5.3.tar

8. Copy the root to image file:
  ### i'm not sure what this does - it is from rboot's scripts: ###
root <at> collie:~# mkdir /dev.tmp
root <at> collie:~# mount -o move /dev /dev.tmp
root <at> collie:~# cp -a /dev.tmp/mmcda1 /dev.tmp/loop0 /dev
root <at> collie:~# mount -o move /dev.tmp /dev
root <at> collie:~# rmdir /dev.tmp
root <at> collie:~# cd rboot-3.5.3/
root <at> collie:~/rboot-3.5.3# ./copy_files.sh /media/image/

9. Install altboot:

root <at> collie:~/rboot-3.5.3# cd .. 
root <at> collie:~# wget http://hentges.net/tmp/altboot/altboot_20050618-
r1_collie.ipk
root <at> collie:~# ipkg install altboot_20050618-r1_collie.ipk

10. That's all folks!
root <at> collie:~# sync
root <at> collie:~# reboot

On next boot altboot asks for a master password. Enter it. 
Altboot works much like grub. It prompts to press any key to choose
where to boot. If user doesn't respond in time, it boots the last used
boot method. Altboot displays a menu if user presses a key in time. 
Go to menu and choose [4] Boot from SD card.

Now you should have more space on root:

root <at> collie:~# df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/loop1               14.1M     12.8M      1.3M  91% /media/ROM
/dev/mmcda1             234.0M    147.1M     74.8M  66% /media/card
/dev/loop1              141.9M     24.2M    110.3M  18% /
/dev/mtdblock4          141.9M     24.2M    110.3M  18% /
tmpfs                    30.5M     56.0k     30.4M   0% /var
/dev/hda1               124.8M     81.1M     43.8M  65% /media/cf

-- 
-- Ville Ranki                     oh3gbq
   ville.ranki@...              040-757 2533
   http://www.vip.fi/~cosmo/

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