2015-04-13 23:49:46 +01:00
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---
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2016-12-27 21:39:23 +00:00
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title: OpenWRT sysupgrade with ExtRoot
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2015-04-13 23:49:46 +01:00
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layout: default
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created: 2014-05-26 22:30:20 +0200
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updated: 2014-05-26 22:47:49 +0200
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toc: false
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tags:
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- know-how
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- software
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- openwrt
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---
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Run `sysupgrade` or upload the new file with LuCI.
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<p><div class="noteimportant" markdown="1">
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When upgrading with ExtRoot mounted, your configuration in ExtRoot will be saved and **restored to the `overlay` in
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Flash memory**. So if you have a specific emergency configuration, be sure to boot without ExtRoot before starting the
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upgrade.
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</div></p>
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After the reboot, you will be in the base system (that is, your configuration, but without ExtRoot). Run these commands
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to get back on track:
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opkg update
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opkg install block-mount
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opkg install kmod-fs-ext4
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opkg install kmod-usb-storage
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mount /dev/sda1 /mnt
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rm /mnt/etc/.extroot-uuid
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reboot
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After this reboot, either everything will be working again (/dev/sda1 mounted to `/overlay`) or - if there was a new
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kernel in that upgrade - /dev/sda1 might be mounted to `/overlay-disabled`. In that case, you have to recreate ExtRoot
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(save your configuration first).
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If your previous ExtRoot mounted fine, you might want to update your packages there. It is important to **NOT** upgrade
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kernel modules as this might break things. The [ExtRoot Wiki Page](http://wiki.openwrt.org/doc/howto/extroot#old.notes)
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lists a command to only update non-kernel-packages:
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opkg upgrade $(opkg list-upgradable | awk '($1 !~ "^kmod|Multiple") {print $1}')
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