diff --git a/sys/lib/libkern/Makefile b/sys/lib/libkern/Makefile
index 870a4a3954f8..15032c8f4849 100644
--- a/sys/lib/libkern/Makefile
+++ b/sys/lib/libkern/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.70 2003/05/15 13:50:35 itojun Exp $
+#	$NetBSD: Makefile,v 1.71 2003/07/07 13:20:17 dsl Exp $
 
 LIB=		kern
 NOPIC=		# defined
@@ -45,6 +45,8 @@ SRCS+=	_que.c arc4random.c
 
 SRCS+=	strstr.c strlcpy.c strlcat.c
 
+SRCS+=	xlat_mbr_fstype.c
+
 # Files to clean up
 CLEANFILES+= lib${LIB}.o lib${LIB}.po
 
diff --git a/sys/lib/libkern/xlat_mbr_fstype.c b/sys/lib/libkern/xlat_mbr_fstype.c
new file mode 100644
index 000000000000..5a935e04e904
--- /dev/null
+++ b/sys/lib/libkern/xlat_mbr_fstype.c
@@ -0,0 +1,71 @@
+/*	$NetBSD: xlat_mbr_fstype.c,v 1.1 2003/07/07 13:20:17 dsl Exp $	*/
+
+/*-
+ * Copyright (c) 2003 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by David Laight.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0,"$NetBSD: xlat_mbr_fstype.c,v 1.1 2003/07/07 13:20:17 dsl Exp $");
+
+
+#include <sys/disklabel.h>
+#include <sys/disklabel_mbr.h>
+
+int
+xlat_mbr_fstype(int mbr_type)
+{
+	const static struct ptn_types {
+		uint8_t mbr_type;
+		uint8_t netbsd_type;
+	} ptn_types[] = {
+		{ MBR_PTYPE_APPLEUFS,   FS_APPLEUFS },
+		{ MBR_PTYPE_FAT12,      FS_MSDOS },
+		{ MBR_PTYPE_FAT16B,     FS_MSDOS },
+		{ MBR_PTYPE_FAT16L,     FS_MSDOS },
+		{ MBR_PTYPE_FAT16S,     FS_MSDOS },
+		{ MBR_PTYPE_FAT32,      FS_MSDOS },
+		{ MBR_PTYPE_FAT32L,     FS_MSDOS },
+		{ MBR_PTYPE_LNXEXT2,    FS_EX2FS },
+		{ MBR_PTYPE_LNXSWAP,    FS_SWAP },
+		{ MBR_PTYPE_NETBSD,     FS_BSDFFS },
+		{ MBR_PTYPE_NTFS,       FS_NTFS },
+		{ 0,			FS_OTHER }
+	}; 
+	const struct ptn_types *pt;
+	for (pt = ptn_types; pt->mbr_type != 0; pt++)
+		if (mbr_type == pt->mbr_type)
+			break;
+	return pt->netbsd_type;
+}