Ubuntu 26.04 LTS ISO Provenance¶
Current baseline media for the first nova-ve deployment lane:
- Filename:
ubuntu-26.04-live-server-amd64.iso - Official release page:
https://releases.ubuntu.com/26.04/ - Official checksum file:
https://releases.ubuntu.com/26.04/SHA256SUMS - Expected SHA256:
dec49008a71f6098d0bcfc822021f4d042d5f2db279e4d75bdd981304f1ca5d9
Acquisition¶
- Download the ISO from the official Ubuntu release page.
- Download the matching checksum file from the same official location.
Checksum Verification¶
Example:
cd ~/Downloads
sha256sum ubuntu-26.04-live-server-amd64.iso
grep 'ubuntu-26.04-live-server-amd64.iso' SHA256SUMS
The two SHA256 values must match exactly before the image is used for validation.
Base OS Rule¶
Use the Ubuntu 26.04 LTS GA AMD64 server ISO as the base OS for the supported deployment lane. Do not use pre-release media for new installs.
Refresh Rule¶
When an official 26.04.x point-release AMD64 server ISO becomes available from Ubuntu's official release channels:
- update this document
- rerun the validation lane using the newer official image
Do not switch to daily or unofficial media for the main validation lane.