Upgrade Debian 8 to 9

Post tags: | debian | debian_upgrade | linux |

Motivation

        Thu Jun 20 10:21:39 MDT 2019
        Firefox on Release 8.11 jessie
          does not allow uBlock Origin (my preferred)
        
        Mon May 20 11:51:10 MDT 2019
        
        lsb_release -a
         ...
        Distributor ID:	Debian
        Description:	Debian GNU/Linux 8.11 (jessie)
        Release:	8.11
        Codename:	jessie
        
        Debian 9 ("stretch") — current stable release
        Debian 8 ("jessie") — obsolete stable release 
        

Web search

debian.org/releases Chapter 4. Upgrades from Debian 8 (jessie)

rootusers.com How to Upgrade Debian 8 Jessie to Debian 9 Stretch

starred

linuxconfig.org How to upgrade Debian 8 Jessie to Debian 9 Stretch

starred

phoenixnap.com How to Upgrade Debian 8 Jessie to Debian Linux 9 Stretch

linuxhint.com Upgrade Debian 8 to 9

Log

Thu Jun 27 16:56:07 MDT 2019

sudo apt update

        : An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://qgis.org jessie InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY CAEB3DC3BDF7FB45
        
        W: Failed to fetch http://ftp.us.debian.org/debian/dists/jessie-updates/InRelease  Unable to find expected entry 'main/source/Sources' in Release file (Wrong sources.list entry or malformed file)
        
        W: Failed to fetch http://qgis.org/debian/dists/jessie/InRelease  
        
        W: Failed to fetch http://ftp.us.debian.org/debian/dists/jessie-backports/main/source/Sources  404  Not Found [IP: 64.50.236.52 80]
        
        W: Failed to fetch http://ftp.us.debian.org/debian/dists/jessie-backports/contrib/source/Sources  404  Not Found [IP: 64.50.236.52 80]
        
        W: Failed to fetch http://ftp.us.debian.org/debian/dists/jessie-backports/non-free/source/Sources  404  Not Found [IP: 64.50.236.52 80]
        
        W: Failed to fetch http://ftp.us.debian.org/debian/dists/jessie-backports/main/binary-amd64/Packages  404  Not Found [IP: 64.50.236.52 80]
        
        W: Failed to fetch http://ftp.us.debian.org/debian/dists/jessie-backports/contrib/binary-amd64/Packages  404  Not Found [IP: 64.50.236.52 80]
        
        W: Failed to fetch http://ftp.us.debian.org/debian/dists/jessie-backports/non-free/binary-amd64/Packages  404  Not Found [IP: 64.50.236.52 80]
        
        W: Failed to fetch http://ppa.launchpad.net/bookworm-team/bookworm/ubuntu/dists/jessie/main/binary-amd64/Packages  404  Not Found
        
        W: Failed to fetch http://packages.x2go.org/debian/dists/wheezy/main/source/Sources  404  Not Found [IP: 148.251.201.107 80]
        
        W: Failed to fetch http://packages.x2go.org/debian/dists/wheezy/main/binary-amd64/Packages  404  Not Found [IP: 148.251.201.107 80]
        
        W: Failed to fetch http://build.i3wm.org/debian/sid/dists/sid/main/binary-amd64/Packages  HttpError404
        
        W: Some index files failed to download. They have been ignored, or old ones used instead.
        

https://superuser.com/questions/1417617/apt-get-update-is-failing-in-debian

Sources.list now:

        deb http://deb.debian.org/debian jessie main
        deb http://security.debian.org/debian-security jessie/updates main
        

Thu Jun 27 17:12:12 MDT 2019

sudo apt upgrade

        lsb_release -a
        
        No LSB modules are available.
        Distributor ID:	Debian
        Description:	Debian GNU/Linux 9.9 (stretch)
        Release:	9.9
        Codename:	stretch
        

Update Firefox

With snapcraft?