1.    04 Jun 2017 #1
    Join Date : Jun 2017
    Posts : 2
    Windows 10

    Saving a .dat file to Sd


    Windows 10. Surface Book. I've downloaded a .dat file to update a camera's firmware. I copy the file to SD. When I take the SD out the file disappears. Please tell me what I'm doing wrong.
      My ComputerSystem Spec
  2.    04 Jun 2017 #2
    Join Date : Aug 2014
    Forever West
    Posts : 3,926
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    Where is the .dat file disappearing from, the camera or the computer? Most times reformatting a memory stick/card in a computer will prevent a camera from using it, best to reformat in the camera itself. My computers can read the SD/SDHC cards from the cameras without needing reformatting.
      My ComputerSystem Spec
  3.    04 Jun 2017 #3
    Join Date : Jun 2017
    Posts : 2
    Windows 10
    Thread Starter

    I formatted the SD card in camera as instructed. I inserted it into the computer and copied the .dat file to it. It's not seen by the camera nor is it there when I put it back into the computer. I checked by doing it all again. Saved to Sd. Took the SD out of the computer. Put the SD back into the computer and the .dat file is gone. Insanity looms. The .dat file disappears from the SD.
      My ComputerSystem Spec
  4.    04 Jun 2017 #4
    Join Date : Aug 2014
    Forever West
    Posts : 3,926
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    Could be be a Hidden file? Some programs do that to their own .dat files.
      My ComputerSystem Spec
  5.    04 Jun 2017 #5
    Join Date : Sep 2014
    Nashville, TN
    Posts : 3,143
    Windows 10 Pro

    How are you removing the SD card? Are you using the "Safely Remove Hardware" icon in the task tray? Or are you right clicking on the Drive letter and choosing "Eject" before removing it?

    If you are not doing this, then the file may not have been fully written to disk when you take it out. Ejecting or Safely Removing will flush all buffers and make sure it's completely written to disk.
      My ComputerSystem Spec

 


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