The next step is to allocate disk space for Xubuntu 20.10. You can choose to erase your entire hard drive and install Xubuntu or install it alongside your existing operating system. If you choose to install Xubuntu alongside your existing operating system, you will need to allocate disk space for Xubuntu. You can choose to use entire disk or specify a custom size. Once you have allocated disk space, click on "Install Now" button.