Dell XPS 15 L502X hard drive Partition-Collection of common programming errors

OK, now I get it. First, I would NEVER recommend that you use the Microsoft native tools to do partitioning. I see people with WAY too many problems.

Download Easeus here: http://www.partition-tool.com/personal.htm

Then once you open it, Click “Resize/Move Partition” in the left pane. Once the new window opens, you will pull the slider from the very right (the round dot) back to the right leaving the free white space as in the screenshot. Hit OK, then apply the changes (the check mark at the top).

After it is committed, make your new partition in the free space using Easeus or the Windows Disk Manager.

This is a very stable program and operation, and should not lose any data or affect your recovery partition. I have never had this program, or any like it fail in 17 years. That said, any disk manipulation has a chance of going wrong.