diff --git a/generic/initrd.defaults b/generic/initrd.defaults
index ede68dc..c45eb35 100644
--- a/generic/initrd.defaults
+++ b/generic/initrd.defaults
@@ -73,7 +73,7 @@ fi
 REAL_ROOT=''
 CDROOT=0
 CDROOT_DEV=''
-CDROOT_TYPE='iso9660'
+CDROOT_TYPE='auto'
 NEW_ROOT="/newroot"
 CONSOLE="/dev/console"