diff --git a/vold/blkdev.c b/vold/blkdev.c
index e10eafc..22d000e 100644
--- a/vold/blkdev.c
+++ b/vold/blkdev.c
@@ -32,6 +32,7 @@
 #include "vold.h"
 #include "blkdev.h"
 #include "diskmbr.h"
+#include "media.h"
 
 #define DEBUG_BLKDEV 0
 
@@ -132,7 +133,12 @@
         }
     } else if (blk->type == blkdev_partition) {
         struct dos_partition part;
-        int part_no = blk->minor -1;
+	int part_no;
+
+        if (blk->media->media_type == media_mmc)
+            part_no = blk->minor % MMC_PARTS_PER_CARD -1;
+        else
+            part_no = blk->minor -1;
 
         if (part_no < 4) {
             dos_partition_dec(block + DOSPARTOFF + part_no * sizeof(struct dos_partition), &part);
diff --git a/vold/media.h b/vold/media.h
index 567ce04..6fd8b84 100644
--- a/vold/media.h
+++ b/vold/media.h
@@ -28,6 +28,12 @@
     media_devmapper,
 } media_type_t;
 
+/*
+ * max 8 partitions per card
+ */
+#define MMC_PARTS_PER_CARD (1<<3)
+#define ALIGN_MMC_MINOR(min) (min / MMC_PARTS_PER_CARD * MMC_PARTS_PER_CARD)
+
 typedef struct media {
     char           *devpath;
     char           *name;
diff --git a/vold/uevent.c b/vold/uevent.c
index dffe817..dc15d80 100644
--- a/vold/uevent.c
+++ b/vold/uevent.c
@@ -325,7 +325,10 @@
          * If there isn't a disk already its because *we*
          * are the disk
          */
-        disk = blkdev_lookup_by_devno(maj, 0);
+        if (media->media_type == media_mmc)
+            disk = blkdev_lookup_by_devno(maj, ALIGN_MMC_MINOR(min));
+        else
+            disk = blkdev_lookup_by_devno(maj, 0);
 
         if (!(blkdev = blkdev_create(disk,
                                      event->path,
diff --git a/vold/volmgr.c b/vold/volmgr.c
index 61d0c4f..deb680e 100644
--- a/vold/volmgr.c
+++ b/vold/volmgr.c
@@ -536,9 +536,16 @@
          * Since we only support creating 1 partition (right now),
          * we can just lookup the target by devno
          */
-        blkdev_t *part = blkdev_lookup_by_devno(dev->major, 1);
+        blkdev_t *part;
+        if (vol->media_type == media_mmc)
+            part = blkdev_lookup_by_devno(dev->major, ALIGN_MMC_MINOR(dev->minor) + 1);
+        else
+            part = blkdev_lookup_by_devno(dev->major, 1);
         if (!part) {
-            part = blkdev_lookup_by_devno(dev->major, 0);
+            if (vol->media_type == media_mmc)
+                part = blkdev_lookup_by_devno(dev->major, ALIGN_MMC_MINOR(dev->minor));
+            else
+                part = blkdev_lookup_by_devno(dev->major, 0);
             if (!part) {
                 LOGE("Unable to find device to format");
                 return -ENODEV;
@@ -573,9 +580,14 @@
         rc = -ENODEV;
         int i;
         for (i = 0; i < dev->nr_parts; i++) {
-            blkdev_t *part = blkdev_lookup_by_devno(dev->major, (i+1));
+            blkdev_t *part;
+            if (vol->media_type == media_mmc)
+                part = blkdev_lookup_by_devno(dev->major, ALIGN_MMC_MINOR(dev->minor) + (i+1));
+            else
+                part = blkdev_lookup_by_devno(dev->major, (i+1));
             if (!part) {
-                LOGE("Error - unable to lookup partition for blkdev %d:%d", dev->major, (i+1));
+                LOGE("Error - unable to lookup partition for blkdev %d:%d",
+                    dev->major, dev->minor);
                 continue;
             }
             rc = _volmgr_start(vol, part);