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= Appendix B. UUID Reference
:page-parent: Appendices
:toclevels: 1
:page-nav_order: 2

// SPDX-FileCopyrightText: 2022 Alyssa Ross <hi@alyssa.is>
// SPDX-License-Identifier: GFDL-1.3-no-invariants-or-later OR CC-BY-SA-4.0

https://en.wikipedia.org/wiki/Universally_unique_identifier[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.

== https://en.wikipedia.org/wiki/GUID_Partition_Table[GPT] Partition Types

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

"EFI System Partition", from the https://uefi.org/specifications[UEFI
Specification].

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

"Root Partition (amd64/x86_64)" from the
https://systemd.io/DISCOVERABLE_PARTITIONS/[Discoverable Partitions
Specification].

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

"Root Verity Partition (amd64/x86_64)" from the
https://systemd.io/DISCOVERABLE_PARTITIONS/[Discoverable Partitions
Specification].

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

xref:user-partition.adoc[Spectrum user partition].

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

https://github.com/endlessm/eos-installer["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.
debug log:

solving 5099ec3 ...
found 5099ec3 in https://spectrum-os.org/git/spectrum

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	https://spectrum-os.org/git/spectrum
	https://spectrum-os.org/git/ucspi-vsock
	https://spectrum-os.org/git/www

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