._ files

Discussion in 'macOS' started by Leiser9, Oct 10, 2011.

  1. Leiser9 macrumors newbie

    May 29, 2011
    On my external hard drive, many files have randomly appeared that begin with ._ have appeared, and are only viewable with hidden files set to appear. The ._ have the same file type as other files in the same folders, and the names are similar to files in the same folder except with the ._ in the beginning, and all of them are approx. 4-6kB. They don't appear on all files, but they do show up on more than half. What is the purpose of these files and is it ok to delete them?
  2. balamw Moderator


    Staff Member

    Aug 16, 2005
    New England
  3. Intell macrumors P6


    Jan 24, 2010
    These files are created by Mac OS X on non-HFS+ disks. They hold meta data about the file touched by Mac OS X. It is safe to delete them.

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