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How to remove Ubuntu and put Windows back on?

I want to remove my Ubuntu on my computer.

When I go to Windows, I decide to format the disk but I got this:

enter image description here

Can someone teach me how to remove Ubuntu on my computer using Windows 7

Thank you in advance!

I also got this:

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marked as duplicate by Anwar Shah, Eliah Kagan, Scott Severance, James Henstridge, Mik Sep 27 '12 at 10:12

This question was marked as an exact duplicate of an existing question.

It doesn't look like you have Ubuntu. You cannot format your boot drive. – Mitch Jul 20 '12 at 16:17
Yeah, those are NTFS partitions. Ubuntu's partitions are usually ext4 and never NTFS. – Eliah Kagan Jul 20 '12 at 16:19
@tijyba I believe Disk Managemente tool of Windows is able to see, and erase linux partitions. – LnxSlck Jul 20 '12 at 16:25
I have already install ubuntu so if I doesn't have Ubuntu installe d so why I can not used those partitions? – user66498 Jul 20 '12 at 16:30
Did you install via wubi? – Thomas W. Jul 20 '12 at 16:42
up vote 0 down vote accepted

Ubuntu is probably installed in the 14.75 GB OEM Partition shown in your image since the others are all NTFS (which means Windows) or much too small.

I think you are trying to delete the 117Mb System partition (which is probably diagnostics software for your PC).

While you may be able to delete the Ubuntu partition, doing so may render your PC unbootable. If your PC boots via grub in the Ubuntu partition (which is likely), deleting this partition will stop the PC from booting up at all as grub won't find it's boot files, so won't be able to boot either Ubuntu or Windows!

If you are confident about it, then instructions for replacing grub's bootloader by the Windows bootloader can be found here.

However, since it's only using 14.75Gb of your approx 400Gb disk, I'd recommend just forgetting about it until such time as you are doing a reinstall of Windows (when you can just reformat the whole disk).

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Thank you for answering! Thank you very much! I have delete the grub so it's would not be a problem and I can likely booting in windows 7 via test. So you suggest me just forgetting about it but anyway did have any method do get it removed? when I right click it just show ''help'' – user66498 Jul 20 '12 at 17:34
If you've already got rid of grub then Windows should be able to delete the 14.75Gb partition holding Ubuntu. As mentioned, the 117Mb system partition is probably diagnostics and should be left alone; it's NTFS so is probably related to Windows anyway. – StarNamer Jul 20 '12 at 17:48
sorry,I don't really underestand that.But this action just restore the bootloader to windows,not to be delete the 14.75Gb partition holding. – user66498 Jul 20 '12 at 18:44
The point is that having restored the windows bootloader (and got rid of grub) windows should be able to delete the 14.75GB partition and then you can use the space for something else. – StarNamer Jul 21 '12 at 22:30
  • If you installed Ubuntu inside Windows (via Wubi), follow this guide.
  • Else, you can uninstall any OS (Ubuntu, Windows...) via this little tool: OS-Uninstaller

enter image description here

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He doesn't have Ubuntu installed. See the image – Mitch Jul 20 '12 at 16:19
So how the heck he wants to uninstall ubuntu when ubuntu is not installed? – Rrj Jul 20 '12 at 16:32
Possibly installed via wubi. – Akshit Baunthiyal Jul 20 '12 at 16:47

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