Index: sbin/fsck_ffs/fsutil.c
===================================================================
--- sbin/fsck_ffs/fsutil.c
+++ sbin/fsck_ffs/fsutil.c
@@ -387,7 +387,7 @@
 		exit(EEXIT);
 	if (preen == 0)
 		printf("\n");
-	pfatal("CANNOT %s: %ld", mesg, (long)blk);
+	pfatal("CANNOT %s: %ld: %s", mesg, (long)blk, strerror(errno));
 	if (reply("CONTINUE") == 0)
 		exit(EEXIT);
 }