title: Grub configuration for liveCD
body: <p>I need to create my custom linux liveCD. I used <a href="http://community.linuxmint.com/tutorial/view/1784" rel="nofollow">this</a> perfect guide to do this.</p>
  
  <p>In few words: I took linux Mint liveCD, mount it, unpack filesysetm.squashfs, edit it with chroot and pack everything back to iso.
  I faced with a problem when tried customize grub settings. For example, I want to set GRUB_TIMEOUT to zero. I can edit grub config file, but i can't run update-grub.</p>
  
  <pre><code>voronwe@sul $  sudo chroot edit
  sul #  mount -t proc none /proc
  sul #  mount -t sysfs none /sys
  sul #  mount -t devpts none /dev/pts
  sul #  export HOME=/root
  sul #  export LC_ALL=C
  sul #  update-grub
  /usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?).
  </code></pre>
  
  <p>And i can't mount boot:</p>
  
  <pre><code>sul # mount boot
  mount: can't find boot in /etc/fstab or /etc/mtab
  sul # cat /etc/fstab
  # UNCONFIGURED FSTAB FOR BASE SYSTEM
  sul # cat /etc/mtab 
  binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0
  none /proc proc rw 0 0
  none /sys sysfs rw 0 0
  none /dev/pts devpts rw 0 0
  </code></pre>
  
  <p>So, do anyone know how can grub configuration be update on liveCD?</p>