UUID Reference

UUIDs are used extensively throughout Spectrum. When encountering a UUID in the codebase, it can be difficult to understand what exactly the UUID means, and where it originates from — is it from some standard, or Spectrum-specific?

To solve this problem, this reference documents all of the UUIDs used in Spectrum.

GPT Partition Types

`c12a7328-f81f-11d2-ba4b-00a0c93ec93b`

"EFI System Partition", from the UEFI Specification.

`4f68bce3-e8cd-4db1-96e7-fbcaf984b709`

"Root Partition (amd64/x86_64)" from the Discoverable Partitions Specification.

`2c7357ed-ebd2-46d9-aec1-23d437ec2bf5`

"Root Verity Partition (amd64/x86_64)" from the Discoverable Partitions Specification.

`9293e1ff-cee4-4658-88be-898ec863944f`

Spectrum user partition.

`56a3bbc3-aefa-43d9-a64d-7b3fd59bbc4e`

"eosimages" partition on the Spectrum combined live system / installer image.

Combined Image Partition IDs

These UUIDs are used as the unique partition identifiers for the Spectrum combined live system / installer image.

`6e23b026-9f1e-479d-8a58-a0cda382e1ce`

The Spectrum installer system.

Finding Undocumented UUIDs

Running the Documentation/scripts/undocumented-uuids.sh script from the root of the Spectrum repository will scan the entire tree for UUIDs not mentioned in this document.