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diff --git a/man/machine-id.xml b/man/machine-id.xml
index 1e558a617..725370d32 100644
--- a/man/machine-id.xml
+++ b/man/machine-id.xml
@@ -55,21 +55,21 @@
Description
The /etc/machine-id file
- contains the unique machine id of the local system
+ contains the unique machine ID of the local system
that is set during installation. The machine ID is a
- single newline-terminated, hexadecimal, lowercase 32
- character machine ID string. (When decoded from
- hexadecimal this corresponds with a 16 byte/128 bit
- string.)
+ single newline-terminated, hexadecimal, 32-character,
+ lowercase machine ID string. When decoded from
+ hexadecimal, this corresponds with a 16-byte/128-bit
+ string.
The machine ID is usually generated from a
random source during system installation and stays
constant for all subsequent boots. Optionally, for
- stateless systems it is generated during runtime at
+ stateless systems, it is generated during runtime at
boot if it is found to be empty.
The machine ID does not change based on user
- configuration, or when hardware is replaced.
+ configuration or when hardware is replaced.
This machine ID adheres to the same format and
logic as the D-Bus machine ID.
@@ -77,15 +77,18 @@
Programs may use this ID to identify the host
with a globally unique ID in the network, which does
not change even if the local network configuration
- changes. Due to this and its greater length it is
+ changes. Due to this and its greater length, it is
a more useful replacement for the
gethostid3
- call POSIX specifies.
+ call that POSIX specifies.
The
systemd-machine-id-setup1
tool may be used by installer tools to initialize the
- machine ID at install time.
+ machine ID at install time. Use
+ systemd-firstboot1
+ to initialize it on mounted (but not booted) system
+ images.
@@ -93,9 +96,9 @@
Note that the machine ID historically is not an
OSF UUID as defined by RFC
- 4122, nor a Microsoft GUID. Starting with
- systemd v30 newly generated machine IDs however do
+ url="https://tools.ietf.org/html/rfc4122">RFC
+ 4122, nor a Microsoft GUID; however, starting with
+ systemd v30, newly generated machine IDs do
qualify as v4 UUIDs.
In order to maintain compatibility with existing
@@ -113,7 +116,7 @@ id[8] = (id[8] & 0x3F) | 0x80;
(This code is inspired by
generate_random_uuid() of
drivers/char/random.c from the
- kernel sources.)
+ Linux kernel sources.)
@@ -123,7 +126,7 @@ id[8] = (id[8] & 0x3F) | 0x80;
The simple configuration file format of
/etc/machine-id originates in the
/var/lib/dbus/machine-id file
- introduced by D-Bus. In fact this latter file might be a
+ introduced by D-Bus. In fact, this latter file might be a
symlink to
/etc/machine-id.
@@ -138,7 +141,8 @@ id[8] = (id[8] & 0x3F) | 0x80;
machine-info5,
os-release5,
sd-id1283,
- sd_id128_get_machine3
+ sd_id128_get_machine3,
+ systemd-firstboot1