Or, install them on other disk partitions which might make things messy. If you do not have additional space available, you will have to keep using the basic features Windows provides. But as soon as you start installing programs, you will realize that you need more space. Windows can run on your device given that you have these minimum hard drive requirements.
According to Microsoft, the minimum space required to install the 32-bit Windows 10 is 16 GB while the 64-bit requires 32 GB.