===================================================================
RCS file: /cvs/openbsd/update_openbsd/update_openbsd,v
retrieving revision 1.99
retrieving revision 1.100
diff -u -r1.99 -r1.100
--- openbsd/update_openbsd/update_openbsd	2017/12/11 01:45:45	1.99
+++ openbsd/update_openbsd/update_openbsd	2017/12/11 01:48:08	1.100
@@ -1,5 +1,5 @@
 #!/bin/sh
-# $AFresh1: update_openbsd,v 1.98 2017/12/11 01:35:44 andrew Exp $
+# $AFresh1: update_openbsd,v 1.99 2017/12/11 01:45:45 andrew Exp $
 #
 # Copyright (c) 2012 Andrew Fresh <andrew@afresh1.com>
 #
@@ -428,7 +428,7 @@
         exit 1
     fi
 
-    mount | grep -q " ${_d%/} .* msdos" && mount_is_msdos=1
+    [ $_d != / ] && mount | grep -q " on ${_d%/} .* msdos" && mount_is_msdos=1
 
     if [ X"$BOOT_KERNEL_VERSION" != X"$NEW_KERNEL_VERSION" ]; then
         echo "===> Backing up $BOOT_KERNEL to ${_d}obsd"