Index: head/sys/boot/efi/libefi/efipart.c
===================================================================
--- head/sys/boot/efi/libefi/efipart.c
+++ head/sys/boot/efi/libefi/efipart.c
@@ -119,8 +119,11 @@
 		    (void**)&blkio);
 		if (EFI_ERROR(status))
 			continue;
-		if (!blkio->Media->LogicalPartition)
+		if (!blkio->Media->LogicalPartition) {
+			printf("%s%d isn't a logical partition, skipping\n",
+			    efipart_dev.dv_name, n);
 			continue;
+		}
 
 		/*
 		 * If we come across a logical partition of subtype CDROM