Naming Files to Ensure Maximum Storage (Windows Embedded CE 6.0)


To store the maximum number of files on file allocation table (FAT) file systems, such as PC card storage devices, limit file names to eight uppercase characters and file extensions to three uppercase characters. File names that do not conform to these limits require more than one physical directory entry on a PC card.

Windows Embedded CE does not allow the following characters in a file or directory name:

  • Asterisk (*)
  • Double backslash (\\)
  • Slash (/)
  • Question mark (?)
  • Angle brackets (<>)
  • Colon (:)
  • Quotation marks (")
  • Pipe (|)
  • Any character whose ASCII value is less than 32

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