diff --git a/block.c b/block.c
index 2e2059333c..c7e0dcbc5c 100644
--- a/block.c
+++ b/block.c
@@ -209,7 +209,7 @@ static int is_windows_drive_prefix(const char *filename)
             filename[1] == ':');
 }
 
-static int is_windows_drive(const char *filename)
+int is_windows_drive(const char *filename)
 {
     if (is_windows_drive_prefix(filename) &&
         filename[2] == '\0')
@@ -253,43 +253,23 @@ static BlockDriver *find_protocol(const char *filename)
  * Detect host devices. By convention, /dev/cdrom[N] is always
  * recognized as a host CDROM.
  */
-#ifdef _WIN32
 static BlockDriver *find_hdev_driver(const char *filename)
 {
-    if (strstart(filename, "/dev/cdrom", NULL))
-        return bdrv_find_format("host_device");
-    if (is_windows_drive(filename))
-        return bdrv_find_format("host_device");
-    return NULL;
-}
-#else
-static BlockDriver *find_hdev_driver(const char *filename)
-{
-    struct stat st;
+    int score_max = 0, score;
+    BlockDriver *drv = NULL, *d;
 
-#ifdef __linux__
-    if (strstart(filename, "/dev/fd", NULL))
-        return bdrv_find_format("host_floppy");
-    if (strstart(filename, "/dev/cd", NULL))
-        return bdrv_find_format("host_cdrom");
-#elif defined(__FreeBSD__)
-    if (strstart(filename, "/dev/cd", NULL) ||
-        strstart(filename, "/dev/acd", NULL)) {
-        return bdrv_find_format("host_cdrom");
-    }
-#else
-    if (strstart(filename, "/dev/cdrom", NULL))
-        return bdrv_find_format("host_device");
-#endif
-
-    if (stat(filename, &st) >= 0 &&
-            (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) {
-        return bdrv_find_format("host_device");
+    for (d = first_drv; d; d = d->next) {
+        if (d->bdrv_probe_device) {
+            score = d->bdrv_probe_device(filename);
+            if (score > score_max) {
+                score_max = score;
+                drv = d;
+            }
+        }
     }
 
-    return NULL;
+    return drv;
 }
-#endif
 
 static BlockDriver *find_image_format(const char *filename)
 {
diff --git a/block/raw-posix.c b/block/raw-posix.c
index d7f9b4843e..5e65da00a7 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -953,6 +953,22 @@ kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex ma
 
 #endif
 
+static int hdev_probe_device(const char *filename)
+{
+    struct stat st;
+
+    /* allow a dedicated CD-ROM driver to match with a higher priority */
+    if (strstart(filename, "/dev/cdrom", NULL))
+        return 50;
+
+    if (stat(filename, &st) >= 0 &&
+            (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) {
+        return 100;
+    }
+
+    return 0;
+}
+
 static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
 {
     BDRVRawState *s = bs->opaque;
@@ -1152,6 +1168,7 @@ static int hdev_create(const char *filename, QEMUOptionParameter *options)
 static BlockDriver bdrv_host_device = {
     .format_name	= "host_device",
     .instance_size	= sizeof(BDRVRawState),
+    .bdrv_probe_device	= hdev_probe_device,
     .bdrv_open		= hdev_open,
     .bdrv_close		= raw_close,
     .bdrv_create        = hdev_create,
@@ -1197,6 +1214,14 @@ static int floppy_open(BlockDriverState *bs, const char *filename, int flags)
     return 0;
 }
 
+static int floppy_probe_device(const char *filename)
+{
+    if (strstart(filename, "/dev/fd", NULL))
+        return 100;
+    return 0;
+}
+
+
 static int floppy_is_inserted(BlockDriverState *bs)
 {
     return fd_open(bs) >= 0;
@@ -1242,6 +1267,7 @@ static int floppy_eject(BlockDriverState *bs, int eject_flag)
 static BlockDriver bdrv_host_floppy = {
     .format_name        = "host_floppy",
     .instance_size      = sizeof(BDRVRawState),
+    .bdrv_probe_device	= floppy_probe_device,
     .bdrv_open          = floppy_open,
     .bdrv_close         = raw_close,
     .bdrv_create        = hdev_create,
@@ -1279,6 +1305,13 @@ static int cdrom_open(BlockDriverState *bs, const char *filename, int flags)
     return raw_open_common(bs, filename, flags);
 }
 
+static int cdrom_probe_device(const char *filename)
+{
+    if (strstart(filename, "/dev/cd", NULL))
+        return 100;
+    return 0;
+}
+
 static int cdrom_is_inserted(BlockDriverState *bs)
 {
     BDRVRawState *s = bs->opaque;
@@ -1323,6 +1356,7 @@ static int cdrom_set_locked(BlockDriverState *bs, int locked)
 static BlockDriver bdrv_host_cdrom = {
     .format_name        = "host_cdrom",
     .instance_size      = sizeof(BDRVRawState),
+    .bdrv_probe_device	= cdrom_probe_device,
     .bdrv_open          = cdrom_open,
     .bdrv_close         = raw_close,
     .bdrv_create        = hdev_create,
@@ -1367,6 +1401,14 @@ static int cdrom_open(BlockDriverState *bs, const char *filename, int flags)
     return 0;
 }
 
+static int cdrom_probe_device(const char *filename)
+{
+    if (strstart(filename, "/dev/cd", NULL) ||
+            strstart(filename, "/dev/acd", NULL))
+        return 100;
+    return 0;
+}
+
 static int cdrom_reopen(BlockDriverState *bs)
 {
     BDRVRawState *s = bs->opaque;
@@ -1437,6 +1479,7 @@ static int cdrom_set_locked(BlockDriverState *bs, int locked)
 static BlockDriver bdrv_host_cdrom = {
     .format_name        = "host_cdrom",
     .instance_size      = sizeof(BDRVRawState),
+    .bdrv_probe_device	= cdrom_probe_device,
     .bdrv_open          = cdrom_open,
     .bdrv_close         = raw_close,
     .bdrv_create        = hdev_create,
@@ -1466,6 +1509,10 @@ static BlockDriver bdrv_host_cdrom = {
 
 static void bdrv_raw_init(void)
 {
+    /*
+     * Register all the drivers.  Note that order is important, the driver
+     * registered last will get probed first.
+     */
     bdrv_register(&bdrv_raw);
     bdrv_register(&bdrv_host_device);
 #ifdef __linux__
diff --git a/block/raw-win32.c b/block/raw-win32.c
index 1e95153d56..72acad58f9 100644
--- a/block/raw-win32.c
+++ b/block/raw-win32.c
@@ -306,6 +306,15 @@ static int find_device_type(BlockDriverState *bs, const char *filename)
     }
 }
 
+static int hdev_probe_device(const char *filename)
+{
+    if (strstart(filename, "/dev/cdrom", NULL))
+        return 100;
+    if (is_windows_drive(filename))
+        return 100;
+    return 0;
+}
+
 static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
 {
     BDRVRawState *s = bs->opaque;
@@ -391,6 +400,7 @@ static int raw_set_locked(BlockDriverState *bs, int locked)
 static BlockDriver bdrv_host_device = {
     .format_name	= "host_device",
     .instance_size	= sizeof(BDRVRawState),
+    .bdrv_probe_device	= hdev_probe_device,
     .bdrv_open		= hdev_open,
     .bdrv_close		= raw_close,
     .bdrv_flush		= raw_flush,
diff --git a/block_int.h b/block_int.h
index 8d0da7cfd7..830b7e9c9d 100644
--- a/block_int.h
+++ b/block_int.h
@@ -48,6 +48,7 @@ struct BlockDriver {
     const char *format_name;
     int instance_size;
     int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename);
+    int (*bdrv_probe_device)(const char *filename);
     int (*bdrv_open)(BlockDriverState *bs, const char *filename, int flags);
     int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num,
                      uint8_t *buf, int nb_sectors);
@@ -177,4 +178,8 @@ void *qemu_blockalign(BlockDriverState *bs, size_t size);
 
 extern BlockDriverState *bdrv_first;
 
+#ifdef _WIN32
+int is_windows_drive(const char *filename);
+#endif
+
 #endif /* BLOCK_INT_H */