Index: stand/efi/libefi/efipart.c
===================================================================
--- stand/efi/libefi/efipart.c
+++ stand/efi/libefi/efipart.c
@@ -257,6 +257,15 @@
 		    !blkio->Media->MediaPresent) {
 			return (false);
 		}
+
+		/*
+		 * iPXE stub Block IO protocol. Test for "iPXE" in MediaID
+		 * and BlockSize.
+		 */
+		if (blkio->Media->MediaId == 0x69505845U &&
+		    blkio->Media->BlockSize == 1) {
+			return (false);
+		}
 	}
 	return (true);
 }