Index: stand/common/disk.h
===================================================================
--- stand/common/disk.h (revision 343827)
+++ stand/common/disk.h (working copy)
@@ -86,7 +86,7 @@
        int             d_slice;
        int             d_partition;
        uint64_t        d_offset;
-};
+}__attribute__((packed));

 enum disk_ioctl {
        IOCTL_GET_BLOCKS,