====== Ubuntu - chroot - Mounting /dev in a chroot environment ======

When working in a chrooted environment, there is a few special file systems that needs to be mounted so all programs behave properly.

For instance, grub will need to access your disk devices....

While most special file systems might be mounted with:

<code bash>
mount fstype -t fstype /tmp/chroot/mountpoint
</code>

Where fstype will be sysfs, proc, /dev is not following this rule.

In order to mirror /dev, you will need to actually bind /tmp/chroot/dev to your host system's /dev .

This can be done through the following command:

<code bash>
mount --bind /dev /tmp/chroot/dev
</code>

Or to make it shorter:

<code bash>
mount -B /dev /tmp/chroot/dev
</code>

Now, **/tmp/chroot/dev** will be populated with the same content than the host's **/dev** which will allow you to do a grub-update and much more within the chroot.