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I currently have ubuntu 12.04 installed on my computer, but i wan't to change back to Windows 7, but when i tried to install Windows 7 via a DVD/CD, it couldn't install on any of my hard drives. This is mainly because my hard drive's file system is "ext4" and not "ntfs." Also i have tried to format the drive, but it shows up with an error stating that my hard drive is "busy."

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marked as duplicate by Radu Rădeanu, Luis Alvarado Jul 25 at 0:25

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
possibly answered here: askubuntu.com/questions/177438/… –  v2r Feb 9 at 13:29
    
you need to use gparted as indicated in the answer above, burn it on cd and boot it up, that way you make sure that the hard disk is not mounted –  Fischer Feb 9 at 13:38
    
Thank you!!!!!! –  user-3.14159265359 Feb 9 at 14:08
    
I am unable to do anything in Gparted, all the options i have available on my partition "Unmount," "Manage Flags" and "Information" –  user-3.14159265359 Feb 9 at 14:16
    
please upload gparted screenshot by seeing askubuntu.com/questions/417295/… –  Avinash Raj Feb 10 at 3:52

1 Answer 1

Use GParted as indicated in the comments above. You have to use it outside of the Ubuntu installation, as you can't format Ubuntu's partitions while it is using them. You can use a live environment disk, like the installation disk you used - if you don't have it you can download it from here. You can also use a Gparted Live disk, available from here. Boot from one of those disks. and open GParted.

You need to Unmount before you can do anything. Then right-click, Format to →, ntfs.
Then Press the tick to apply the changes: image of tick

Remember to backup any data beforehand.

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As i Unmount the disk this happens "The partition could not be unmounted from the following mount points: / Most likely other partitions are also mounted on these mount points. You are advised to unmount them manually." –  user-3.14159265359 Feb 9 at 14:45
    
You cannot do it from inside Ubuntu - you have to use a live environment disk, like the installation disk you used - if you don't have it you can download it from here. You can also use a Gparted Live disk, available from here. –  Wilf Feb 9 at 14:54
    
It didn't work either. –  user-3.14159265359 Feb 14 at 21:31

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