If you want to keep Windows installed and choose whether to start Windows or Ubuntu each time you start the computer, choose Install Ubuntu alongside Windows. … All of the files on the disk will be deleted before Ubuntu is put on it, so make sure you have backup copies of anything you wanted to keep.

Does install Linux remove Windows?

Yes it is possible. The Ubuntu installer easily lets you erase Windows and replace it with Ubuntu. Here is what you have to do : Backup your data !

Can I install Windows if I have Ubuntu?

Installing Windows after Ubuntu is not the recommended process for a dual boot Windows and Ubuntu system, but it is possible. First, you have to make sure that the 50GB free space is available, resizing your Ubuntu by using gParted if necessary.