it says missing bootmngr or something like that. I'm on ubuntu 12.04 or whatever, the newest one using the gparted to format to NTSC and then unetbootin to install the bootloader, and the iso, then restart. also, i do not know how to use terminal or code..and im also using an external hardrive because this laptop is missing one...

  • 1
    1.12.04/2.NTFS/3. I did not undertand what is it that you did. You got the UBuntu ISO, burned it into the USB using Unetbootin..then what? Windows got messed and it says bootmgr is missing? that is fixed using the Windows CD not the Ubuntu USB.. Jul 10, 2012 at 22:25
  • no no, im on ubuntu, and i want to get rid of ubuntu and put windows on here. i put the windows iso on the usb drive, then the program tells me to restart. i do, and it says bootmngr missing.
    – JoeMech
    Jul 10, 2012 at 22:58
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    Unetbootin in not intended for making bootable USBs with Windows. Use proper tools for the job, and proper help and support sites as well. Jul 11, 2012 at 0:18
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    im on ubuntu! and all the guides i find use unetbootin. i thought this was a help site?
    – JoeMech
    Jul 11, 2012 at 0:20
  • 1
    @JoeMech Give MultiSystem a shot :) Jul 11, 2012 at 5:32

2 Answers 2


That worked for me.

  • Format your USB as FAT32 in GParted
  • Open UNetbootin and get it as far as the stage where it brings up the USB partition to install to e.g. /dev/sdb1Don't install the ISO, though
  • Leaving UNetbootin open as is, switch to GParted
  • Format the USB in GParted as NTFS
  • If GParted doesn't automatically add the "boot" flag, add it yourself
  • Exit GParted, mount USB by running sudo mount /dev/sdb1 /mnt (don't forget to replace sdb1 with your one)
  • Now, go back to UNetbootin, which you've left open in the meantime, and click OK

Doing so, UNetbootin will think you are using a FAT32 partition and will let you use NTFS format.

  • 1
    Thank you, I needed to do it from linux, not windows May 14, 2013 at 17:08
  • I tried that but I get a "BOOTMGR is missing" message at boot. May 21, 2013 at 16:17
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    Cool, a great way to get around newer versions of unetbootin not supporting NTFS.
    – Bealer
    Jun 18, 2013 at 20:16
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    What a great ugly dirty hack! But it's not your fault :) Thanks, worked very well! Oct 19, 2013 at 10:40
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    a more elegent way with recent versions: unetbootin installtype=USB targetdrive=/dev/sdd1 (for example). This worked for me, YMMV.
    – dpb
    Apr 13, 2014 at 20:02

If Windows is what you're trying to install, then Windows 7 bootable USB DVD download tool from Microsoft (Also works on XP) allows you to create a bootable version of windows 7 OS for installing windows through USB drive. To download this utility click Here.

Note: You need to run this on a windows machine.

For more information see Windows 7 USB Creator

Now to create a bootable Windows 7 USB Drive while using Ubuntu, then you need to make sure you have a Windows 7 .ISO file (you can create it from the DVD) and a 4GB USB flash drive (or larger).

Install Gparted and format the USB drive to NTFS. In Ubuntu, use the following command to install Gparted:1

sudo apt-get install gparted

To be able to format a drive to NTFS, you'll also need ntfs-3g - install it using the following command:1

sudo apt-get install ntfs-3g

1Source:Create A Bootable Windows 7 USB Drive From Ubuntu

Updated to add the way to create it using Ubuntu from the Source.

Install Gparted and format the USB drive to NTFS. to install Gparted:

sudo apt install gparted

To format the usb flash drive drive NTFS, install ntfs-3gt to install just type the command below in terminal

sudo apt install ntfs-3g

download TESTED Unetbootin version 494 from Here

Once downloaded navigate to the folder where the file was downloaded, most likley the Downloads folder, and open terminal there. Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command(s) below:

sudo chmod +x ./unetbootin-linux
sudo ./unetbootin-linux-494


sudo add-apt-repository ppa:gezakovacs/ppa
sudo apt-get update
sudo apt install unetbootin

Once installed. open UNetbootin, select "Diskimage" and then browse for your Windows 7 ISO file.

  • 3
    Bit hard to run it on a Windows machine it you don't have one.
    – mckenzm
    Nov 21, 2017 at 1:16
  • @mckenzm If you click on the last link, you will see how to create it using Ubuntu. I will add those steps in the answer.
    – Mitch
    Nov 21, 2017 at 4:58

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