Installing Debian as an upgrade/script
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The following script, which only follows the instructions on Installing Debian as an upgrade, should install Debian on your XO. Just copy/paste it into a file on the XO, chmod +x, and run. I just tested it, and it worked. YMMV. It will stop midway if there is any error, including in the wget image download.
By the way, it's totally unsafe to run code from a wiki like this without reading it.
#!/bin/bash -ex tgz_url="http://dev.laptop.org/~cscott/xo-debian.tgz" cd /versions/pristine mkdir debian cd debian # wget -O- "$tgz_url" | tar xz wget -q -O- "$tgz_url" | tar xvz cp /etc/{hosts,fstab} /versions/pristine/debian/etc/ cp -r /lib/modules/* /versions/pristine/debian/lib/modules cp -r /lib/firmware/* /versions/pristine/debian/lib/firmware mkdir -p /versions/pristine/debian/{versions,security,var/cache/apt/cache} rm -rf /versions/pristine/debian/boot cp -r /boot /versions/pristine/debian cat <<END > /versions/pristine/debian/etc/rcS.d/S00unfreeze.sh #! /bin/sh mount -t sysfs /sys /sys echo 0 > /sys/devices/platform/dcon/freeze umount /sys END chmod a+rx /versions/pristine/debian/etc/rcS.d/S00unfreeze.sh echo 'tmpfs /var/cache/apt/cache tmpfs defaults 0 0' >> /versions/pristine/debian/etc/fstab cat <<END > /versions/pristine/debian/etc/apt/apt.conf.d/00-tmpfs-cache Dir { Cache "var/cache/apt/" { srcpkgcache "cache/srcpkgcache.bin"; pkgcache "cache/pkgcache.bin"; }; }; END cd /versions/boot rm -rf alt ln -s /versions/pristine/debian alt cp -rl /versions/pristine/debian /versions/run/debian /usr/sbin/setattr -R --iunlink /versions/run/debian echo 'Debian is installed! Reboot and hold down the game key labelled "O"'