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I need to install Win 7 on a computer that previously had Ubuntu 14.04 installed. I created a bootable USB with the Windows 7 ISO on it, but I can't boot from it. From the BIOS/UEFI (not sure) I select the USB stick as boot device but it will not boot but go directly into GRUB.

When I put my Ubuntu USB in, I can boot Ubuntu directly without going to GRUB. I'm really an amateur when it comes to Linux, but I wonder what I can do to repair my boot routine for booting the Windows 7 USB and install it?

My partitions

  • Windows 7 default is BIOS which only works on MBR partitioned drives. If you want UEFI boot and drive is gpt partitioned you have to slightly modify Windows 7 flash drive to have boot files in correctly location for UEFI boot. Both Ubuntu & Windows need to be in same boot mode, both UEFI or both BIOS.askubuntu.com/questions/289559/… and: eightforums.com/tutorials/… – oldfred Apr 16 '16 at 14:54
  • I already deleted my Ubuntu partitions. I can't find a way to boot Windows 7 from the USB stick, while booting Ubuntu Live from USB works. What might be the problem? – Ike Apr 16 '16 at 16:24
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I'm pretty sure that the problem is your burned USB for Windows. Maybe try to burn a new one by using the official application provide by Microsoft named Windows USB/DVD Download Tool.

And just a trick: you could try your usb key to see if it's bootable by testing it on a Virtualbox's VM. To do that when you start a VM on the first seconds you see the text "press F12 to select the boot device". You certainly need to boot a first time to mount the USB on the VM by going on Devices > Usb > NAMEOFYOURUSB. Then, you shutdown/start to press F12 the second time.

  • I created it with Rufus, but I will try again with the official Microsoft app. How can I use a VM to check whether it's bootable? – Ike Apr 16 '16 at 14:52
  • I edited my answer to explain how to check with Virtualbox – monitor35 Apr 16 '16 at 15:25
  • Created an USB stick with the official Microsoft app, still cannot boot. Installed Oracle VM Virtualbox now and it doesn't prompt me to select the boot device. I can't seem to mount the USB. – Ike Apr 16 '16 at 16:28

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