Index: util/getroot.c
===================================================================
--- util/getroot.c	(Revision 1757)
+++ util/getroot.c	(Arbeitskopie)
@@ -457,9 +457,16 @@
 	}
       else if (os_dev[7] >= '0' && os_dev[7] <= '9')
 	{
-	  memcpy (grub_dev, os_dev + 5, 7);
+	  strcpy (grub_dev,"md");
+	  strncpy (grub_dev, os_dev + sizeof("/dev/md") -1,5);
 	  grub_dev[7] = '\0';
 	}
+      else if (os_dev[7] == '/' && os_dev[8] >= '0' && os_dev[8] <= '9')
+	{
+	  strcpy (grub_dev,"md");
+	  strncpy (grub_dev + sizeof ("md") -1, os_dev + sizeof("/dev/md/") -1, 5);
+	  grub_dev[7] = '\0';
+	}
       else
 	grub_util_error ("Unknown kind of RAID device `%s'", os_dev);