Disk & Partition Management
Windows disk management
diskmgmt.msc is the name of Windows built in disk management solution. This is fine for basic operations but for anything more intense than a simple expansion into empty space on the right you may want to seek out more robust methods.
This is used via a Linux live environment.
Gparted has the advantage of working on almost any disk, when in Windows you cannot operate extensively on your main
C:\ drive but Gparted is booted from its own media and not running on
C:\ so it does not have this restriction.