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
"EFI System Partition", from the UEFI Specification.
"Root Partition (amd64/x86_64)" from the Discoverable Partitions Specification.
"Root Verity Partition (amd64/x86_64)" from the Discoverable Partitions Specification.
"eosimages" partition on the Spectrum combined live system / installer image.
Combined Image Partition IDs
Finding Undocumented UUIDs
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.