plug the usb stick into your computer wait till it loads the drivers so you can see the drive then go to Control Panel\All Control Panel Items\Administrative Tools then click on computer managment then storage click your usb drive it will be the smallest in size .then you wil see 2 partions right click on the smaller of the 2 and click remove partion ,then go back to your deaktop write click on the usb drive and click fast format then you will be able to see the full 1 gig stick .
how to remove the CDFS partition & reformat it. Download this click here, do a virus scan then run umptool2090.exe, click "settings", tick "need format" then click the button 2nd from the right at the bottom of the form (the form isn't sized properly as I could only see the top few pixels of the buttons so just tab until you get the correct button). The settings form will close and the scan mode will show as "high level scan format". Click the button that displays the drive letter & you should now have a clean drive with 1 partition.
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