Firstly I tested 9/10/11 sectors formats, all worked fine.
Currently one problem found: write track not working, then formating track not overwrite the sectors.
It is means EPDOS Format and FAFO with Verify can't format emulated disks, because verify error.
FAFO without Verify working, I created empty RAW 990K image with the HxC software, it is a "Not a DOS disk" at begin, because not have boot sector and etc, just pure empty sectors. Finally successfully formated with FAFO when Verify is off.
The EXDOS Format not check the contains of sectors while verify only the WD flags for data error then executed without error.