I tried to copy sardu on my another usb drive but it doesn't work.
When start copying; syslinux.exe error occurs (shows classic Windows dialog that the application preformed illegal operation).
Sardu than works as usual and copies all iso images and finish "succesfully".
But when I try to boot the device, it shows "Disc Error Press any key to restart"
It all worked fine until I formated my drive with HP USB Disk Storage Format Tool.
Probably its because of it and there is something wrong with MBR.