Delete, resize or copy them as needed
Manage your disk partitions with GParted
Looking for a good partition manager for your Windows computer? One of the best programs out there is GParted. It is open-source and supports almost every file system out there, including ext2/3/4, btrfs, FAT16, FAT32, NTFS, HFS+, UFS, XFS, and more.
Basically, your hard drive is divided into one or more segments called partitions. Usually, it is difficult to modify a partition after you create it, especially in Windows. GParted is a program that you can use to make changes to the partitions on your hard drive, such as deleting a partition, resizing a partition, or copying a partition.
It does all this without deleting your data. You can also use it to enable or disable partition flags such as boot and hidden. GParted is written in Linux, but can be used to manage Windows partitions by booting from a Live CD.