Upgrade lucid to precise

1. boot.scr mmc init 2;fatload mmc 2 80200000 uImage;bootm 0x80200000 setenv bootargs console=ttyO2,115200n8 mem=512M@0x80000000 root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait mpurate=${mpurate} ethaddr=${ethaddr} omapdss.def_disp=dvi omapfb.mode=dvi:800x600MR-16@60 vram=4M --no-log ps: --no-log is workaround for "init: Failed to create pty - disabling logging for job"

2. apt sources.list modify /etc/apt/sources.list, replace lucid to precise

3. do dist-upgrade apt-get dist-upgrade -o APT::Immediate-Configure=false during dist-upgrade, some configuration file will be changed

4. mkdir lib/modules dir mkdir -p /lib/modules/2.6.37-gb0042ce touch /lib/modules/2.6.37-gb0042ce/modules.dep

5. remove old udev net rules rm /etc/udev/rules.d/70-persistent-net.rules

6. do backup tar cvpf gogobox-ubuntu-precise-20121015.tar.gz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys /