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docs: reword intro in DISCOVERABLE PARTITIONS

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This specification is useful independently of UEFI, so avoid making assertions
about UEFI. Also reword the intro to say what this is about in the very first
sentence. Closes #16570.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2020-08-03 14:49:24 +02:00
parent f254abcd72
commit 3e2d2fbbdd
1 changed files with 9 additions and 9 deletions
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18
docs/DISCOVERABLE_PARTITIONS.md
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@ -9,21 +9,21 @@ _TL;DR: Let's automatically discover, mount and enable the root partition,
`/home/`, `/srv/`, `/var/` and `/var/tmp/` and the swap partitions based on
GUID Partition Tables (GPT)!_
The GUID Partition Table (GPT) is mandatory on EFI systems. It allows
identification of partition types with UUIDs. So far Linux has made little use
of this, and mostly just defined one UUID for file system/data partitions and
another one for swap partitions. With this specification, we introduce
additional partition types to enable automatic discovery of partitions and
their intended mountpoint. This has many benefits:
This specification describes the use of GUID Partition Table (GPT) UUIDs to
enable automatic discovery of partitions and their intended mountpoints.
Traditionally Linux has made little use of partition types, mostly just
defining one UUID for file system/data partitions and another one for swap
partitions. With this specification, we introduce additional partition types
for specific uses. This has many benefits:
* OS installers can automatically discover and make sense of partitions of
existing Linux installations.
* The OS can discover and mount the necessary file systems with a non-existing
* The OS can discover and mount the necessary file systems with a non-existent
or incomplete `/etc/fstab` file and without the `root=` kernel command line
option.
* Container managers (such as nspawn and libvirt-lxc) can decode and set up
* Container managers (such as nspawn and libvirt-lxc) can introspect and set up
file systems contained in GPT disk images automatically and mount them to the
right places, thus allowing booting the same, identical images on bare-metal
right places, thus allowing booting the same, identical images on bare metal
and in Linux containers. This enables true, natural portability of disk
images between physical machines and Linux containers.
* As a help to administrators and users partition manager tools can show more