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-rw-r--r--sys/conf/NOTES8
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index 40d23b4047eb..c919e31070a5 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -836,9 +836,15 @@ options EXT2FS
# unsuitable for inclusion on machines with untrusted local users.
options VFS_AIO
-# Cryptographically secure random number generator; /dev/[u]random
+# Cryptographically secure random number generator; /dev/random
device random
+# The bit-bucket; /dev/null
+device null
+
+# The system memory devices; /dev/mem, /dev/kmem
+device mem
+
# Optional character code conversion support with LIBICONV.
# Each option requires their base file system and LIBICONV.
options CD9660_ICONV