OS X Mavericks: Rename items on your Mac
You can change the name of most files, folders, and disks in the Finder, including the internal hard disk (named Macintosh HD by default). Changing the name of your hard disk does not change the name of your Mac when it appears on a network.
- Select the item you want to rename, then press Return.
Note: The items in the Finder window sidebar are aliases. To change the name of a sidebar item, locate the original and rename it.
- Type a new name for the item.
You can use numbers and most symbols. You can’t include a colon (:) or start the name with a period (.). Some apps may not allow you to use a slash (/) in a filename.
- Press Return.
There are some things you should not rename:
App folders and any items that came with your system, such as the Library folder. (If you change the name of an item and experience problems, change the name back. If this doesn’t help, you may need to reinstall the software.)
Filename extensions—the period followed by two or three letters you see at the end of some filenames (for example, .jpg). If you change an extension, you may no longer be able to open the file with the app that was used to create it.
Your home folder—the one with your name on it.