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How To Downgrade a Distribution Upgrade on an Ubuntu Instance on Oracle Cloud Infrastructure (OCI)

edited Feb 24, 2023 2:59PM in Linux

Linux distribution upgrades, including Ubuntu distribution upgrades, result in many major package upgrades, and in general it is not feasible to downgrade all the packages that were updated during a distribution upgrade. 

Instead, if for some reason an ubuntu distribution upgrade needs to be reverted or reversed, an earlier back up of the ubuntu instance should be restored from a snapshot.

To do this, make a back up of your Ubuntu instance's boot volume using the following procedure prior to performing the distribution upgrade:

https://docs.oracle.com/en-us/iaas/Content/Block/Tasks/backingupabootvolume.htm

If a recent snapshot of the system's boot volume prior to the distribution upgrade isn't available, do a clean install of Ubuntu distribution that was used prior to the distribution upgrade, and then restore any data from the most recent data back up you have available from before the distribution upgrade.

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