Some warning dialogs appear, one of which informs you that formatting a disk will erase all data on that disk. You can also tick the 'Perform a quick format' checkbox (the difference between a quick format and full format is not part of this tutorial - either will work). In the Format dialog select 'FAT' under 'File system' (FAT in this case means FAT16).Right-click on the SD-card and click 'Format.'.It should presently be formatted as FAT32 (point B). In Computer Management click on 'Disk Management' (point A) and locate your SD-card.Run 'Computer Management' by clicking 'Start -> Run', typing 'compmgmt.msc' in the dialog box and then clicking ok.Insert the SD-card into the computer (most laptops have card-readers, or alternatively USB card readers can be purchased from most computer stores).(Please note that this tutorial is written using Windows XP, however the procedure should be similar for other versions of Windows.) The good news is that it is possible to, quite easily, format an SDHC (SD High-Capacity) card as FAT16 - using the following steps: MikroElektronika do have a library available for handling the FAT32 file system for SD cards ( click here to go to their FAT32 Library webpage), however you may still, for whatever reason, find a requirement to work with the FAT16 file system (perhaps you have an exising project, for example, already developed to work with the FAT16 file system - and you cannot any longer source FAT16 formatted SD-cards). Many microcontroller compilers still do not, or have not in the past, supported the FAT32 file system for SD-cards.

For higher capacity cards, you may wish to try reducing the size of the partition on the drive to 4GB or smaller, and then formatting that partition as FAT16, using a tool like EaseUS Partition Manager. The below will most likely only work for 4GB SDHC cards.

Usb fat16 format