http://www.knoppix.net/forum/viewtopic.php?t=20131 which was found by searching the forums for the word upgrade
Hi there --
I downloaded and burned version 3.9 onto a CD and would like to upgrade my existing 3.4 installation to the newer version. Is there a specific procedure that I should use to accomplish this? Thanks.
http://www.knoppix.net/forum/viewtopic.php?t=20131 which was found by searching the forums for the word upgrade

Ubuntu Server 26.04.1 LTS Bootable USB Flash Drive – Latest September 2026
$12.99
BOSGAME E4 Air Mini PC, AMD Ryzen 5 3500U 8GB DDR4 256GB SATA SSD
$169.99
OPNsense pfSense 8-Core Atom C3758 2.2GHz 8GB DDR4 64GB SSD 8x NIC QAT AES VPN
$115.00
VA Linux 1120 1U Rackmount Server
$100.00
NVIDIA Jetson TK1 + Intel NUC Compute Cluster Tray w/ Netgear 16-Port Switch
$499.99
OPNsense Firewall VPN QAT 8-Core Atom C3758 2.20GHz 16GB DDR4 128GB SSD 8xNIC
$175.00
All New Ubuntu 26.04 LTS Linux Bootable USB Flash Drive
$15.95
Dell R730 AI Home Lab Server 128GB RTX 3060 Ti Dual Xeon 20-Core
$999.00
SQL Server 2022 Enterprise 96 Core License & DVD Unlimited CALs with CoA
$284.99
Microsoft SQL Server 2019 Enterprise 40 Core Unlimited CAL Retail License FPP
$299.00