--- a/disk/part_dos.c
+++ b/disk/part_dos.c
@@ -91,18 +91,6 @@ static int part_test_dos(struct blk_desc *dev_desc)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, mbr, dev_desc->blksz);

-	if (blk_dread(dev_desc, 0, 1, (ulong *)mbr) != 1)
-		return -1;
-
-	if (test_block_type((unsigned char *)mbr) != DOS_MBR)
-		return -1;
-
-	if (dev_desc->sig_type == SIG_TYPE_NONE &&
-	    mbr->unique_mbr_signature != 0) {
-		dev_desc->sig_type = SIG_TYPE_MBR;
-		dev_desc->mbr_sig = mbr->unique_mbr_signature;
-	}
-
 	return 0;
 }