For information about Hiren’s boot cd click here
1. Connect USB Pen Drive (1GB or more)
2. Download and Run USB Disk Storage Format USB

3.Download grubinst_gui Grub 4 Dos (179KB) and Run as Administrator

4. Insert the BootCD (10.3 or newer) in the CD Drive and Copy everything from CD to USB Flash Drive
You can download Hiren 15.1 from here
5. Copy grldr and menu.lst from (or from HBCD folder) to the usb drive

6. Test Your USB Drive
Make sure you set your computer to boot from USB Flash Drive