-vtLoopExDir=$VTOY_PATH/vtloopex/crux/vtloopex
-$BUSYBOX_PATH/xz -d $vtLoopExDir/dm-mod/$(uname -r)/64/dax.ko.xz
-$BUSYBOX_PATH/xz -d $vtLoopExDir/dm-mod/$(uname -r)/64/dm-mod.ko.xz
-$BUSYBOX_PATH/insmod $vtLoopExDir/dm-mod/$(uname -r)/64/dax.ko
-$BUSYBOX_PATH/insmod $vtLoopExDir/dm-mod/$(uname -r)/64/dm-mod.ko
+if $GREP -q 'device-mapper' /proc/devices; then
+ vtlog "dm-mod module check success ..."
+else
+ vtlog "Need to load dm-mod module ..."
+ ventoy_extract_vtloopex ${vtdiskname}2 crux
+
+ vtKver=$(uname -r)
+ vtLoopExDir=$VTOY_PATH/vtloopex/crux/vtloopex
+
+ ventoy_check_install_module_xz $vtLoopExDir/dm-mod/$vtKver/64/dax.ko
+ ventoy_check_install_module_xz $vtLoopExDir/dm-mod/$vtKver/64/dm-mod.ko
+fi