Index: cddl/contrib/opensolaris/lib/libzfs/common/libzfs_pool.c
===================================================================
--- cddl/contrib/opensolaris/lib/libzfs/common/libzfs_pool.c	(revision 346369)
+++ cddl/contrib/opensolaris/lib/libzfs/common/libzfs_pool.c	(working copy)
@@ -3300,6 +3300,7 @@
 		return (zfs_error(hdl, EZFS_BADVERSION, msg));
 	}
 
+#if 0
 	if (!islog && !avail_spare && !l2cache && zpool_is_bootable(zhp)) {
 		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 		    "root pool can not have removed devices, "
@@ -3306,6 +3307,7 @@
 		    "because GRUB does not understand them"));
 		return (zfs_error(hdl, EINVAL, msg));
 	}
+#endif
 
 	zc.zc_guid = fnvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID);