--- silo-1.4.8/first-isofs/isofs.c.orig	2005-02-22 13:26:47.000000000 +0000
+++ silo-1.4.8/first-isofs/isofs.c	2005-02-22 16:31:01.000000000 +0000
@@ -68,7 +68,7 @@
 		*s++ = (ap->boot_dev_ctrl & 07) + '0';
 		*s++ = ',';
 		// Hopefully it's never > 10
-		*s++ = ap->boot_dev_unit;
+		*s++ = (ap->boot_dev_unit & 07) + '0';
 		*s++ = ','; 
 		*s++ = '0';
 		*s++ = ')';