Question: Trying to create a [Hiren's BootCD](http://www.hiren.info/pages/bootcd) on a USB. Not needing anything else such as a dual boot of Ubuntu and Haren or Window's and Haren. All the programs that I can find to complete this either end up directing me on how to create a Ubuntu boot on a usb, or how to do it on Windows. But since it is my Windows computer that I'm trying to fix I need an alternative. Please Help?

Answer: 
Ok I found a solution [here](http://www.linuxquestions.org/questions/linux-newbie-8/boot-hirens-boot-iso-from-grub2-4175452264/)

This approach use grub2 and so it is very convenient if you want to do a multi boot usb 

1. install grub 2 on the usb driver ( `grub-install --force --no-floppy --boot-directory=[PATH_TO_USB] /dev/sd[X]`
2. extract Hiren iso files on the usb ( you should have a folder /HBCD in the root of the usb )
3. copy grub.exe (can be found in hbcd\dos\dos.gz, inside the .img file)
4. copy menu.lst from the hbcd folder to the root of the usb drive
5. add the following menu entry to grub.cfg on the usb:

Here the menu entry:

```
menuentry "HBCD" {  
    linux16 /grub.exe --config-file="find --set-root /HBCD/menu.lst; configfile /HBCD/menu.lst"  
}

```

Once compleated you can reboot or test it with qemu:  

`qemu-system-x86_64 -hda /dev/sd[X]`
You can make a bootable USB on Ubuntu from any (bootable) .ISO image using `dd` command:

```
dd if=./someisofile.iso of=/dev/sdb

```

however, I'd like to warn you that `dd` is a very dangerous command and you should only proceed if you fully understand the meaning of its parameters, in particular, the `of` one. 

If you google for something like "dd iso usb", you'll fins quite a few tutorials, for example [this one from Fedora](http://fedoraproject.org/wiki/How_to_create_and_use_Live_USB#Using_dd_for_a_direct_copy), [this one from Linux Mint](http://community.linuxmint.com/tutorial/view/744), or [this one from ArchLinux](https://wiki.archlinux.org/index.php/USB_Installation_Media)