Hello! Doing clean install after mess up, put my image, video, music, text files to external hard drive (not time machine). I was checking them in Windows computer and found many files having copies that all started with " ._ " Like image.png was ._image.png None of them could be opened. I checked Internet and seems Mac just makes copies like that for system. http://apple.stackexchange.com/ques...rscore-files-created-and-how-can-i-avoid-them But no where can I find answer - could these files carry anything malicious for Mac? Or are they same as any image file? As in risk of ._ files having anything bad in them being as low as risk of image/video/music/text files having anything bad in them?