Cfxtrjtrk

1. Insert the USB device, then run gparted.




2. Select the USB device from the list near the upper-right corner of the GParted window
   and detect where it was mounted: /dev/sd[1 letter] (mine was /dev/sdc).



3. Make sure the USB device is unmounted (right-click and select unmount). Don't forget to format it to NTFS in GParted.
   


4. 
   sudo dd if=[PATH TO YOUR .iso FILE] of=/dev/sd[THAT 1 LETTER]
   
   

   
   

   In my case: sudo dd if=/home/downloads/windows7.iso of=/dev/sdc

   
   

   
   

You must run dd as su or sudo. It's worth mentioning that gparted requires su as well, but will typically use gksudo to prompt for the password.

This means you can lock gparted to the launcher on a persistent liveboot USB for field diagnostics.

If you boot with UEFI (not BIOS or UEFI with BIOS compatibility mode (a.k.a. CSM)) all you'll need is GParted and a file manager.

The ISO must be configured for UEFI boot for this to work. I've successfully done this with both Windows 8.1 and Ubuntu 14.04, but I can't vouch for any other OS. (Edit: I just tried this with Windows 10 without success. Don't know why, but WinUSB worked so I didn't investigate further.)

This is what I do to create a bootable USB drive for UEFI firmware:

1. 
   Create a GPT partition table on your USB drive. In GParted, chose "Device" and then "Create partition table...". Choose gpt in the dropdown.


2. 
   Format a partition on the USB drive to FAT32 using GParted. All UEFI compliant firmwares must support FAT12, FAT16 and FAT32, so any of these should be fine, but NTFS will not work.


3. 
   Mount the USB drive like you would any other external storage so you can access the filesystem on the partition you created.


4. 
   Mount the ISO you wish to add to the USB drive so you can access the files in there.


5. Now, when you have access to both the ISO and the USB drive as filesystems in your file manager (Nautilus or whatever) just copy and paste all files in the ISO to the USB drive.


6. 
   Add the 'boot' flag to the partition you've created and added the files to. In GParted, right click the partition, choose "manage flags" and then check the "boot" option.

(While testing this I couldn't mount the USB drive anymore after setting the boot flag. I don't know why, but GParted could still see it and the end result was still a bootable USB drive, so I guess it doesn't really matter.)

7. 
   Restart your computer and choose to boot from the USB drive.

Once again: Please note that for this to work, your computer's firmware must be UEFI compliant and the ISO must be ready for UEFI boot.

If you find an EFI directory in the ISO that's usually a good sign.

To see whether you're currently using UEFI boot, run sudo efibootmgr -v in a terminal. If it lists a number of boot options you're good to go. If you're using BIOS compatibility mode you'll see something like this:

Fatal: Couldn't open either sysfs or procfs directories for accessing EFI variables.

Try 'modprobe efivars' as root.

For more information on UEFI, please read this excellent essay on the subject: https://www.happyassassin.net/2014/01/25/uefi-boot-how-does-that-actually-work-then/

Also, I don't think Ubuntu will work with Secure Boot enabled, so you'll have to disable that to be able to use UEFI boot with Ubuntu.

If you're using Ubuntu to burn Windows ISO to USB you could use WinUSB. Unetbootin won't work with Windows ISOs. It supports only Linux distros.

However, installing WinUSB on current Ubuntu versions is not an easy task. More than that WinUSB has older GRUB dependencies that may interfere with your bootloader setup, so you may end up with a non-bootable Ubuntu. Well that shouldn't be such a big problem if you were making a Windows USB to get rid of Ubuntu. But that is not guaranteed either.

Currently there are two methods for booting an operating system. EFI loading and MBR loading. Which one is suitable for you depends on the PC/motherboard capabilities. The method for creating a bootable USB for each of the above mentioned boot loading methods is described on How can I create a Windows bootable USB stick with Ubuntu?

WinUSB can only make MBR bootable USB drive.

You can use WinUSB for burning windows iso to pendrive.

Additional details and Ubuntu packages can be found here

Note:-You need minimum 4 GB pendrive for burning windows 7 iso

There's a tool called Multisystem which can make a USB drive bootable, and boot various OSes from it - amongst others, Windows XP, Vista and Seven are supported (the program's pages are in French only; the program itself is localized). I was able to boot the WinXP install ISO off a USB flash disk using this tool.

Note that the Windows CD is an install CD, not a usable "live" distribution.

It's very simple...
We will go step by step :using power iso:

1. Download and install power iso.


2. Open power iso.


3. Click on tools and then create bootable USB drive.


4. It may ask run as admin. then make it run as admin.


5. Now browse source image file.


6. Select destination USB drive and then click start.


7. done. your bootable USB is ready for installing an operating system from bootable USB.

NOTE: pendrive must be of 4GB or more.

From Windows, try using unetbootin and from a linux distro use this command in terminal (this worked for me, but you will lose the content of the flash drive, so make a copy):

sudo dd if=<ISO_FILE> of=/dev/sd<FLASH_DRIVE_ID>

I know that question is a bit outdated, but for the sake of compleetness I add a link to a modern standard Ubuntu GUI application for burning iso on a flash drive: Disk Creator.