diff -ur hdparm-4.9/hdparm.8 hdparm-4.9-new/hdparm.8
--- hdparm-4.9/hdparm.8	2002-04-29 16:27:55.000000000 +0200
+++ hdparm-4.9-new/hdparm.8	2002-05-02 14:54:56.000000000 +0200
@@ -368,14 +368,16 @@
 Tristate device for hotswap (DANGEROUS).
 .TP
 .I -X 
-Set the IDE transfer mode for newer (E)IDE/ATA2 drives.
+Set the IDE transfer mode for newer (E)IDE/ATA-7 drives.
 This is typically used in combination with
 .I -d1
 when enabling DMA to/from a drive on a supported interface chipset, where
-.I -X34
-is used to select multiword DMA mode2 transfers.
+.I -X mdma2
+is used to select multiword DMA mode2 transfers and
+.I -X sdma1 
+is used to select simple mode 1 DMA transfers.
 With systems which support UltraDMA burst timings,
-.I -X66
+.I -X udma2
 is used to select UltraDMA mode2 transfers (you'll need to prepare
 the chipset for UltraDMA beforehand).
 Apart from that, use of this flag is
diff -ur hdparm-4.9/hdparm.c hdparm-4.9-new/hdparm.c
--- hdparm-4.9/hdparm.c	2002-04-29 16:27:42.000000000 +0200
+++ hdparm-4.9-new/hdparm.c	2002-05-02 14:48:56.000000000 +0200
@@ -606,6 +606,66 @@
 	printf(")\n");
 }
 
+struct xfermode_entry {
+    int val;
+    char *name;
+};
+
+static struct xfermode_entry xfermode_table[] = {
+    { 8,    "pio0" },
+    { 9,    "pio1" },
+    { 10,   "pio2" },
+    { 11,   "pio3" },
+    { 12,   "pio4" },
+    { 13,   "pio5" },
+    { 14,   "pio6" },
+    { 15,   "pio7" },
+    { 16,   "sdma0" },
+    { 17,   "sdma1" },
+    { 18,   "sdma2" },
+    { 19,   "sdma3" },
+    { 20,   "sdma4" },
+    { 21,   "sdma5" },
+    { 22,   "sdma6" },
+    { 23,   "sdma7" },
+    { 32,   "mdma0" },
+    { 33,   "mdma1" },
+    { 34,   "mdma2" },
+    { 35,   "mdma3" },
+    { 36,   "mdma4" },
+    { 37,   "mdma5" },
+    { 38,   "mdma6" },
+    { 39,   "mdma7" },
+    { 64,   "udma0" },
+    { 65,   "udma1" },
+    { 66,   "udma2" },
+    { 67,   "udma3" },
+    { 68,   "udma4" },
+    { 69,   "udma5" },
+    { 70,   "udma6" },
+    { 71,   "udma7" },
+    { 0, NULL }
+};
+
+static unsigned int translate_xfermode(char * name)
+{
+    struct xfermode_entry *tmp;
+    char *endptr;
+    int val = -1;
+
+
+    for (tmp = xfermode_table; tmp->name; ++tmp) {
+	if (!strcmp(name, tmp->name))
+	    return tmp->val;
+    }
+
+    val = strtol(name, &endptr, 10);
+    if (*endptr == '\0')
+	return val;
+
+    return -1;
+}
+
 static void interpret_xfermode (unsigned int xfermode)
 {
 	printf(" (");
@@ -1408,9 +1468,26 @@
 					num = (num * 10) + (*p++ - '0'); \
 				}
 
+#define GET_STRING(flag, num) tmpstr = name; \
+				tmpstr[0] = '\0'; \
+				if (!*p && argc && isalnum(**argv)) \
+					p = *argv++, --argc; \
+				while (isalnum(*p) && (tmpstr - name < 31)) { \
+					tmpstr[0] = *p++; \
+					tmpstr[1] = '\0'; \
+					++tmpstr; \
+				} \
+				num = translate_xfermode(name); \
+				if (num == -1) \
+					flag = 0; \
+				else \
+					flag = 1;
+
 int main(int argc, char **argv)
 {
 	char c, *p;
+	char *tmpstr;
+	char name[32];
 
 	if  ((progname = (char *) strrchr(*argv, '/')) == NULL)
 		progname = *argv;
@@ -1491,7 +1568,7 @@
 					case 'p':
 						noisy_piomode = noisy;
 						noisy = 1;
-						GET_NUMBER(set_piomode,piomode);
+						GET_STRING(set_piomode,piomode);
 						break;
 #endif
 					case 'r':
@@ -1551,7 +1628,7 @@
 					case 'X':
 						get_xfermode = noisy;
 						noisy = 1;
-						GET_NUMBER(set_xfermode,xfermode);
+						GET_STRING(set_xfermode,xfermode);
 						if (!set_xfermode)
 							fprintf(stderr, "-X: missing value\n");
 						break;