Partition management software programs let you create, delete, shrink, extend, split, or merge partitions on your hard drives or other storage devices. Whether you want to make room for a dual-boot OS installation or combine two partitions for those new UHD movie rips, these are the best free tools I've used.
5 Best Free Disk Partition Software for Windows 10
MiniTool Partition Wizard includes more partition management tools than most similar programs, even those you might pay for.
The free version not only supports common functions like formatting, deleting, moving, resizing, splitting, merging and copying partitions, but also can check file system for errors, perform surface test, and wipe and align partitions.
In addition, MiniTool Partition Wizard can move the operating system to another hard drive and recover lost or deleted partitions. There is also a built-in disk space analyzer and benchmark tool.