How to solve the problem above?
I want to install Windows 7 on my computer but while installing Ubuntu I erased all data and now I don't have NTFS partition to install windows. I have a single sda1 of 490GB extended to 4.1GB of sda2. I have tried GParted and Disks to completely format the hard disk but it is not unmounting.
Please help me to create a NTFS primary partition to install windows. How can I solve this problem?
I recommend you to boot a live session, use the partitioning tool GParted, save the changes and then quit the Ubuntu live session without installing.
By doing so you can format your partitions as you want (be careful not to remove the sda1 partition but just resize it to make room - unallocated space - for a second partition or more).
Then install Windows on the new unallocated space or create and specify a NTFS during the Windows installation process.
