1.    19 May 2016 #1
    Join Date : May 2016
    Posts : 537
    Windows 10

    Invalid File Name

    Hi all,
    Sorry for my poor english.

    I have a SDHC 32GB card and I formated it to exFAT, because I need it for a file that is bigger than 4GB.
    Everything looks and run good, expect 2 files (my own) that I canīt open and read it, the App says "Invalid FIle Name".
    I can see itīs Properties with File Explorer, no problem there.
    I did re-format to itīs Original FAT32 format and I can read those files normally.
    To format to exFAT I used Windows, to format back to FAT32 I used SDFormater from SD-Org.
    I had a 64GB SDXC card, I formated it Windows and my Android did not recognise it.
    I spent 8h around this problem till I found that it was the SD Card format problem.
    Has it to do with Windows Format utility ?
      My ComputerSystem Spec
  2.    20 May 2016 #2
    Join Date : Oct 2013
    Tropic of Cancer
    Posts : 1,648
    Microsoft Windows 10 Home

    NTFS works good for me to copying files bigger than 4GB.

    No third party program is needed. Just Right Click > Format and set the file system to NTFS.
    Click image for larger version. 

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    Hope it will work.
      My ComputerSystem Spec
  3.    20 May 2016 #3
    Join Date : May 2016
    Posts : 537
    Windows 10
    Thread Starter

    Quote Originally Posted by Arc View Post
    NTFS works good for me to copying files bigger than 4GB.
    Hi Arc,
    Thank you very much, NTFS is working.

    I did some further research on the issue, using a SDXC 64GB, native format, on other PC and the problem still there.
    I found out that the problem is related to the Folder Name, it can not have Spaces on the name.
    It can be as long as I wish, but if there one Space on the name, there coming the error "Invalid File Name".
    So, there is a bug, either is my App to old and is not totally compatible with exFAT or there is a problem with exFAT itself.
    Thank you.
      My ComputerSystem Spec


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