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Re: Debian OS Upgradtion from 9.9 to 11.13



On 16 Aug 2023 09:59 +0000, from malay.chandan.ext@bayer.com (Malay Chandan):
>   We are trying to upgrade Debain OS from 9.9 to bullseye

It sounds like you are trying to upgrade directly from Debian 9 to
Debian 11. Doing so is not supported because it would skip an
intermediate major Debian release. You have to first follow the
documented upgrade process from Debian 9 to Debian 10 (buster), then
from Debian 10 to Debian 11 (bullseye).

I would also suggest to upgrade all the way to current stable Debian
12 (bookworm), especially if your upgrade cadence is such that you're
still on Debian 9.

https://www.debian.org/releases/bullseye/amd64/release-notes/ch-upgrading.en.html#upgrade-to-debian-oldrelease

https://www.debian.org/releases/buster/amd64/release-notes/

https://www.debian.org/releases/bullseye/amd64/release-notes/

-- 
Michael Kjörling                     🔗 https://michael.kjorling.se
“Remember when, on the Internet, nobody cared that you were a dog?”


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