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FAQ: added note explaining umount -R and /etc/dropbear #90

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Jan 5, 2025
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FAQ: added note explaining umount -R and /etc/dropbear #90

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FAQ: added note explaining `umount -R` and `/etc/dropbear`
kg4zow Jan 5, 2025
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Update faqs.rst
Eeems Jan 5, 2025
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10 changes: 6 additions & 4 deletions src/faqs.rst
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Expand Up @@ -151,11 +151,12 @@ To make the root filesystem read-write:

mount -o remount,rw /

If you need to make a change to a folder that is mounted as an overlay, you can just unmount the overlay. For example:
If you need to make a change to a folder that is mounted as an overlay, you can just unmount the overlay (and remount the ssh host keys so you will be able to reconnect). For example:

.. code-block:: shell

umount -l /etc
umount -R /etc
mount -t bind /home/root/.dropbear /etc/dropbear

To see a full list of folders that have overlays you can run the following command:

Expand All @@ -170,7 +171,8 @@ If you don't want to reboot, you can set the filesystems back to their normal st
.. code-block:: shell

mount -o remount,ro /
umount /etc/dropbear
mount -o rw,relatime,lowerdir=/etc,upperdir=/var/volatile/etc,workdir=/var/volatile/.etc-work -t overlay overlay /etc
mount -o bind /home/root/.dropbear /etc/dropbear
mount -t bind /home/root/.dropbear /etc/dropbear

Note that you can get the value of the `-o` option in the second command by running the `mount | grep overlay` command noted above, *before* un-mounting anything.
Note that you can get the value of the ``-o`` option in the second ``mount`` command by running the ``mount | grep overlay`` command noted above, *before* un-mounting anything.
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