filesystem: mount devtmpfs if not already mounted.

rules/filesystem/fs/sbin/services

@@ -14,6 +14,10 @@ fi
 
 sysinit()
 {
+    if ! [ -c /dev/null ]; then
+        mount -t devtmpfs devtmpfs /dev
+    fi
+
     if [ -f /.reboot ]; then
         mount -t proc proc /proc
         mount -o remount,rw /
@@ -35,10 +39,7 @@ sysinit()
     echo /sbin/mdev > /proc/sys/kernel/hotplug &&
 
     # Update ld cache, populate /dev.
-#    mount -o remount,rw / &&
     /sbin/mdev -s &&
-#    /sbin/ldconfig &&
-#    mount -o remount,ro / &&
 
     # Set minimum free kbytes.
     echo "$cfg_min_free_kbytes" > /proc/sys/vm/min_free_kbytes &&