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-rw-r--r--doc/guix.texi4
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 3bb29db960..6b6f8dedae 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -10025,7 +10025,9 @@ well as in the @var{groups} field of the @var{operating-system} record.
 
 @deffn {Scheme Procedure} urandom-seed-service
 Save some entropy in @var{%random-seed-file} to seed @file{/dev/urandom}
-when rebooting.
+when rebooting.  It also tries to seed @file{/dev/urandom} from
+@file{/dev/hwrng} while booting, if @file{/dev/hwrng} exists and is
+readable.
 @end deffn
 
 @defvr {Scheme Variable} %random-seed-file