diff --git a/sys/sys/disklabel.h b/sys/sys/disklabel.h
index b201add1250a..c88f65400260 100644
--- a/sys/sys/disklabel.h
+++ b/sys/sys/disklabel.h
@@ -360,6 +360,9 @@ struct dos_partition {
 #define DOSPARTOFF	446
 #define NDOSPART	4
 #define	DOSPTYP_386BSD	0xa5	/* 386BSD partition type */
+#define	DOSPTYP_LINSWP	0x82	/* Linux swap partition */
+#define	DOSPTYP_LINUX	0x83	/* Linux partition */
+#define	DOSPTYP_EXT	5	/* DOS extended partition */
 
 struct dos_partition {
 	unsigned char	dp_flag;	/* bootstrap flags */
diff --git a/sys/sys/diskmbr.h b/sys/sys/diskmbr.h
index b201add1250a..c88f65400260 100644
--- a/sys/sys/diskmbr.h
+++ b/sys/sys/diskmbr.h
@@ -360,6 +360,9 @@ struct dos_partition {
 #define DOSPARTOFF	446
 #define NDOSPART	4
 #define	DOSPTYP_386BSD	0xa5	/* 386BSD partition type */
+#define	DOSPTYP_LINSWP	0x82	/* Linux swap partition */
+#define	DOSPTYP_LINUX	0x83	/* Linux partition */
+#define	DOSPTYP_EXT	5	/* DOS extended partition */
 
 struct dos_partition {
 	unsigned char	dp_flag;	/* bootstrap flags */
diff --git a/sys/sys/diskpc98.h b/sys/sys/diskpc98.h
index b201add1250a..c88f65400260 100644
--- a/sys/sys/diskpc98.h
+++ b/sys/sys/diskpc98.h
@@ -360,6 +360,9 @@ struct dos_partition {
 #define DOSPARTOFF	446
 #define NDOSPART	4
 #define	DOSPTYP_386BSD	0xa5	/* 386BSD partition type */
+#define	DOSPTYP_LINSWP	0x82	/* Linux swap partition */
+#define	DOSPTYP_LINUX	0x83	/* Linux partition */
+#define	DOSPTYP_EXT	5	/* DOS extended partition */
 
 struct dos_partition {
 	unsigned char	dp_flag;	/* bootstrap flags */