I am migrating from Windows (Vista) to Mac OS X. Because my old laptop died, I put its (still functional) harddisk in an external USB enclosure, and am recovering my data from there. Windows puts some stuff in hidden directories (such as ProgramData on C: and - more importantly - AppData in my old home directory, in which my e-mail is stored). Finder does not show them, but in the terminal I can see them. I did the following in my terminal mkdir ~/oldstuff/ProgramData cd /Volumes/Untitled cd ProgramData cp -R . ~/oldstuff/ProgramData Result: files get copied to my Mac's harddisk, but the ProgramData folder in my oldstuff folder disappears from Finder! If I do an 'ls -l', the directory permissions show up as drwxr-xr-x@ Note the weird @ symbol. Solution (after a considerable amount of googling): cd ~/oldstuff chflags nohidden ProgramData Is there not an easier solution than this?