Boot Hiren from USB

In Hirens BootCD go to HBCD\Programs
Open USBFormat:

Select USB device, choose file system and press start to format drive:

Open Grub installer:

Select flash device, press refresh, choose MBR, click install to install boot loader:

For success result this will appear:

Copy all content from cd or extract all content from iso file directly to flash drive root directory

Copy %usbroot%\HBCD\menu.lst to %usbroot%\
Copy %usbroot%\HBCD\grldr to %usbroot%\

All done.