to make sure they run before the stamp file's modification
time gets reset indicating a completed update.</para>
- <para><varname>ConditionFirstBoot=</varname> takes a boolean
- argument. This condition may be used to conditionalize units
- on whether the system is booting up with an unpopulated
- <filename>/etc</filename> directory. This may be used to
- populate <filename>/etc</filename> on the first boot after
- factory reset, or when a new system instances boots up for the
- first time.</para>
+ <para><varname>ConditionFirstBoot=</varname> takes a boolean argument. This condition may be used to
+ conditionalize units on whether the system is booting up with an unpopulated <filename>/etc</filename>
+ directory (specifically: an <filename>/etc</filename> with no <filename>/etc/machine-id</filename>). This may
+ be used to populate <filename>/etc</filename> on the first boot after factory reset, or when a new system
+ instance boots up for the first time.</para>
<para>With <varname>ConditionPathExists=</varname> a file
existence condition is checked before a unit is started. If