The programme should normally just pick up the card you want to format. If it doesn't pick up any card, just press the refresh button.

While it is more secure, p. ex. if you want to give your card away, to overwrite all files, it also takes a considerably longer amount of time.

By adjusting the CHS size, you can potentially resolve issues with unrecognized SD cards and improve the compatibility of the card with various devices. This can happen when the card has been formatted using a tool that sets the CHS values incorrectly, or when the device's firmware is not compatible with the card's actual CHS geometry.

This option might not be supported on some SD Cards and be greyed out, as newer SD card formatting standards such as the SDXC and SDUC protocols use different methods to address storage.