Windows also hides system-critical files and specific folders marked with the "Hidden" attribute. Hide your files like a hacker (5 Ways)
To prevent future hiding, disable “Put hard disks to sleep when possible” in . show hidden finder link
Now, whenever you navigate to your User folder, you will see the yellow Library folder waiting for you. show hidden finder link
If you visit your Library folder every day, you don't want to toggle it each time you reboot. You can "unhide" just the Library folder permanently. show hidden finder link
Show hidden files (like htaccess) in Mac OS X - Alex Turnwall 09-Jun-2013 —