1. Insert your SDCard.
  2. Startup your Win32DiskImager.
  3. On the Image file field, specify the location of the image file.
  4. On the Device field, select the drive letter of the inserted SDCard.
  5. Click the Write button.
  6. To continue, click the Yes button and wait until it's done.
  7. Once completed, click the OK button.
  8. Click the Exit button.

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Creating an Image File of an SDCard using Win32DiskImager