How to create a new partition in Windows Installer? To create a new partition in the Windows installer, boot from the installation media, then select “Custom: Install Windows only (advanced).” ...

1] How to partition an SSD via Windows Settings In this method, we need to access the Storage Management settings that help you to create, shrink, or delete partitions in SSD.

You can partition a hard drive in Windows 10 to create dedicated portions of the hard drive that your computer will recognize separately.