diff --git a/lib/libdisk/change.c b/lib/libdisk/change.c
index 0ee047f6ee7f..5f0c9c6a8222 100644
--- a/lib/libdisk/change.c
+++ b/lib/libdisk/change.c
@@ -47,9 +47,11 @@ Sanitize_Bios_Geom(struct disk *disk)
 	if (disk->bios_sect > 63)
 		sane = 0;
 #endif
+#if 0	/* Disable a check on a disk size.  It's too strict. */
 	if (disk->bios_cyl * disk->bios_hd * disk->bios_sect !=
 	    disk->chunks->size)
 		sane = 0;
+#endif
 	if (sane)
 		return;