this post was submitted on 17 Jul 2023

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Why did I need to restart to upgrade my recovery partition? (self.pop_os)

submitted 1 year ago* (last edited 1 year ago) by jbrains to c/[email protected]

7 comments fedilink hide all child comments

I tried to upgrade my recovery partition today and it failed with "No such device"/OS error 19.

I found this discussion on Reddit in which @mmstick suggested restarting, but with no explanation as to why that was needed or would work. It worked for me.

https://www.reddit.com/r/pop_os/comments/xun8vu/error_updating_recovery_partition_no_such_device/

I'd like to know why it worked and why it was needed, mostly for two reasons: to generally understand the situation better and to imagine what I might have been able to do that didn't require restarting.

Thanks.

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[–] [email protected] 4 points 1 year ago* (last edited 1 year ago) (1 children)

Standard IT practice to turn it off and on again. Some updates require system restarts to apply the update to the running system, otherwise you may see some broken behavior where something's inaccessible because the installed drivers don't match the kernel you're using.

[–] jbrains 1 points 1 year ago* (last edited 1 year ago) (1 children)

I am familiar with this. It also doesn't help me understand much more than "it's complicated". I already suspected as much. 😉

[–] [email protected] 1 points 1 year ago (1 children)

Emphasis on "running system". Similar to how you can't fully re-partition a disk you're currently using.

[–] jbrains 1 points 1 year ago (1 children)

I understand the general concept.

I have also upgraded the recovery partition on this machine every 3 months for over 3 years before needing to reboot to make it work this time. I'm curious what might account for the difference.

Also, I'm not sure how upgrading a recovery partition constitutes updating a running system. I had not booted from the recovery partition. I was not running anything from the recovery partition.

[–] [email protected] 1 points 1 year ago (1 children)

Did you check if the recovery partition was recognised and mounted? Maybe some voodoo made it fail to mount, but it worked after a reboot.

[–] jbrains 1 points 1 year ago

Yes, it was. I checked by unmounting it, then running the upgrade command, which resulted in a clear error message about the partition not being mounted. I don't remember the specific message, but I remember it was different than the one I got when it was mounted. This leads me to believe that the OS error 19 message is some kind of red herring.

Thanks.

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