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UAPI Group Specifications |
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See the menu on the left for a list of all specifications.
Featured Specs:
- Bootloader Specification: Defines a set of file formats and naming conventions to allow distribution independent boot loader menus supportable by multiple bootloaders.
- Base Directory Specification: Standardises default locations and environment variables for locating common files or base directories.
- Discoverable Partitions Specification: Discusses GUID UUIDs for auto-discovery of partition semantics and mount points.
See open PRs on github.
This section clarifies on terms and abbreviations used in specs and other documents.
- MOK - Machine Owner Key (shim)
- PCR – TPM Platform Configuration Registers
- TPM – Trusted Platform Module (security chip)
- SBAT – UEFI Secure Boot Advanced Targeting
- DDI - Discoverable Disk Image
- DPS - Discovery Partition Specification
- UKI - Unified Kernel Images (sd-stub + kernel + initrd + more)
- BLS - Boot Loader Specification
- sysext – System Extension Image (type of DDI that is overlayed on top of
/usr/
and/opt/
via overlayfs and can extend the underlying OS vendor resources in a composable, immutable fashion) - syscfg – System Configuration Image (type of DDI that is overlayed on top of
/etc/
via overlayfs and can extend the underlying OS' configuration in a composable, immutable fashion)
Please use the specifications issue tracker to engage with the project.