--- src/VBox/ValidationKit/testboxscript/testboxscript_real.py.orig	2020-07-10 02:58:10.000000000 +1000
+++ src/VBox/ValidationKit/testboxscript/testboxscript_real.py	2020-08-22 00:13:30.760651000 +1000
@@ -267,7 +267,7 @@
         # Platform specific mount code.
         #
         sHostOs = utils.getHostOs()
-        if sHostOs in ('darwin', 'freebsd'):
+        if sHostOs in ('darwin', 'freebsd', 'bsdsunix'):
             utils.sudoProcessCall(['/sbin/umount', sMountPoint]);
             utils.sudoProcessCall(['/bin/mkdir', '-p', sMountPoint]);
             utils.sudoProcessCall(['/usr/sbin/chown', str(os.getuid()), sMountPoint]); # pylint: disable=E1101