DE2-115 SD Card Root Directory issue

Hi,

I am currently using "SD Card Demonstration" example provided along with DE2-115 development board.

In the use manual, they said the file(.txt) needs to be placed on to the root directory of the SD card. I bought new micro SD card along with its adaptor for SD card slot.

I have spent a couple of hours looking on online but couldn't find a correct way to do.

How to copy a text file into a root directory on the SD card on windows PC?

Regards

Siva