grayed out function

Hi, I installed a os on a separate drive , now i was going to delete partition / and or format that drive in the "right click my computer and maintenance" but i cannot because format and delete partition are grayed out. The drive is displayed as having a paging file. How can i delete this partition and format this drive please ? Can't also in safe mode

thanks again

ralph

If you go to my computer > right click on partition you can format it that way, after that see if it will allow you to delete the partition.