Updating the SBC Installation

From HotDec

Introduction

To be able to keep track of things there is the "official" root directory in /home3/sbc . Any fixes/update you need to make to any SBC should also be repoduced here.

Updating the SBC root directory using /home3/sbc

• Make a compressed tar achive of home3/sbc (the example puts the tar file in /tmp)

 ssh user@elegy.mie.uiuc.edu
 cd /home3
 tar cvjf /tmp/sbc_root.tar.bz2 sbc

• Connect the harddrive (with linux already on it) to the SBC. It is not possible (AFAIK) to overwrite the files on the partition that is currently being run off of.
• Start the SBC, use grub to boot into a linux installation on a partition other than the one to be updated
• Mount the partition that is going to be updated (for example the flash drive)

 mount /dev/nftla1 /mnt

• Clear out all the files on the paritition (be carefull)

 rm -rf /mnt/*

• Copy tar file of root directory to mounted drive

  scp user@elegy.mie.uiuc.edu:/home3/sbc_root.tar.bz2 /tmp

• Uncompress and unpack tar file

  cd /mnt
  tar xvjf /tmp/sbc_root.tar.bz2

• Unmount the partition (this will flush the write buffers to the actuall drive -- may take a while for flash)

  cd /
  umount /mnt

Updating the SBC kernel/root filesystem

• Download most recent version of busybox. Configure, make, make install
• Compare old library files on SBC, copy updated versions into build directory
• tar the new_build directory.
• connect the SBC to the peripheral board, video board and SBC-update hard drive
• boot from the hda1 partition
• mount /dev/nftla1 on /mnt
• scp new_build.tar to the SBC-update hard drive /root directory
• delete old filesystem for the SBC
• untar new_build.tar onto the SBC
• sync
• check /etc/init.d/default.sh for correct CRAFT ID.
• reboot
• boot onto the DOC-SBC
• mount / -o rewritable,rw
• do ldconfig to reconfigure the libraries
• check to make sure all apps work (sshd, scp, ssh in particular)