Free Like GNU

MOVING THE IMAGE TO A USB FLASH DRIVE or SD

You will now need a USB flash drive or SD card at least as big as your virtual disk image. It will be wiped COMPLETELY!! Be sure that after you insert the drive that it is not mounted!

$ sudo dd if=<the path to your disk image> of=<device name e.g. /dev/sdb> bs=1M

$ sudo sync

this will do a nice raw write to your flash. Whatever space is left over you can add a handy extra partition with fdisk too!

IMPORTANT:

Again after the above is done, make sure the drive is unmounted and remove it. Plug it again to check that all is well. If the drive does not have the right label, OLPCRoot, you can use tune2fs, just be sure to unmount it before doing so!

find out where the drive is mounted:

$mount
$sudo umount /media/<name of mounted sd/usb flash>

assuming your flash is /dev/sdb and the mounted partition was from /dev/sdb1

$ sudo tune2fs /dev/sdb1 -L OLPCRoot

GET NECESSARY FILES FROM THE XO

Plug it into the XO, you will now have access to the filesystem of that drive. If you are in XFCE on the XO you will find a root filemanager handy (but be careful!)

$ su

# thunar

if not you can do the following from the terminal in Sugar or TTY:

$su

(assuming you labeled your flash drive OLPCRoot, I’m spreading the commands out for clarity, feel free to optimize, but be careful!)

# cp -ra /boot /media/OLPCRoot/

# cp -ra /lib/modules /media/OLPCRoot/lib/

# cp -ra /lib/firmware /media/OLPCRoot/lib/

# cp -ra /security /media/OLPCRoot/

make sure your develop.sig is in that security folder!

you should rename the /media/OLPCRoot/etc/modprobe.d to modprobe.old or similar

# cd /media/OLPCRoot/etc

# mv modprobe.d modprobe.old

Copy your olpc’s modprobe.d to the flash drive (this will load and blacklist the proper modules)

# cp -ra /etc/modprobe.d /media/OLPCRoot/modprobe.d

rename the existing fstab to something like fstab.old

# mv fstab fstab.old

use the fstab from the olpc

# cp -ar /etc/fstab /media/OLPCRoot/etc/fstab
then make a new /etc/X11/xorg.conf from here (cscott’s debian archive)

notice that it is not using the AMD xorg driver…

then lets rename (cause it will be handy for internal installs) and create a new olpc.fth in /media/OLPCRoot/boot/

# cd /media/OLPCRoot/boot

# mv olpc.fth olpc.fth.nand

use one of these olpc.fth files depending on how you want boot:

FOR USB BOOT:

olpc.fth for usb boot

FOR SD BOOT:
olpc.fth for sd boot

Make sure that whatever you use is named olpc.fth. You should now be able to boot. Use the Rightmost game button to view the boot messages for debugging…

NETWORKING

if you have a WPA network try the following. Check to see if you have a wireless card:

$ iwconfig

assuming your wireless is eth1:

$ sudo wpa_passphrase <ESSID> <s3kr1t password> >> /etc/wpa_supplicant.conf

$ sudo wpa_supplicant -Dwext -ieth1 -c /etc/wpa_supplicant.conf -B

$ sudo dhclient eth1

if all goes well you can edit your /etc/network/interfaces and add the following under the eth1 entry (you can edit the existing eth0)
pre-up wpa_supplicant -ieth1 -Dwext -c /etc/wpasupplicant.conf -Bw

post-down killall wpa_supplicant

then restart networking (it should JustWork on next boot)

$ sudo /etc/init.d/networking restart

References:

howto debian on olpc (wiki.debian.org)

How can I boot OLPC by SD card (lists.laptop.org)

Bochs Bios Bug (bugs.launchad.net/ubuntu)

Thanks to everyone for their help and advice!

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