This tutorial explains how to format or convert a Hard Disk or a Partition to NTFS format, as it is file system that provides better performance and security for data.

If you want to convert a FAT32 drive to NTFS file system without losing data, you can use the convert command line or a third-party converter tool.

Checking disk management showed the partition as efi (instead of primary) and healthy. So I fired up diskpart to see what was going on.