Thanks for response,
I've rad this docs several times.
If you check "7.9.1. Configuring Sysprep on a Template" it says "Attach
Floppy", but there is no Floppy options.
I've figured out something.
If i use only initial boot sysprep enable option, after booting there is no change but i
can see addtional cdrom device that has unattend.xml file