Create a hidden folder in Mac OS X
Apple's Mac OS X operating system is considered UNIX-class and is constructed from pre-existing UNIX standard software. The underlying aspects of Mac OS X also function like most other UNIX operating systems. Mac OS X and other UNIX operating systems support hidden files by beginning the file name with a period. The Mac OS X "Finder" interface does not allow this operation, but most applications on the Mac OS X system do allow for hidden files to be created on the desktop.
To hide pictures, videos, or documents on your Mac OS computer, follow the proceeding informations carefully.
Instructions
Step 1 Open the application for which the hidden file on the desktop is to be created. For example, a word processing program.
Step 2
Click the "File" menu and then click "Save As."
Step 3
Click the "Desktop" as the file save location.
Step 4
Type ".filename" in the File Name box, replacing "filename" with the actual name of the file to be saved. When the filename begins with a period, it remains hidden and does not appear on the desktop.
More advanced Method:
If you're a little less trusting, or if the items you want to hide offer a great personal risk when discovered, then this method is ideal. You will create a Disk Image, choose a password to protect the file, and then hide the resulting DMG file just to make it that much harder to find.
To create a DMG (archive) file, you'll need to use the Mac Disk Utility that comes with your computer. Open this by navigating to Applications -> Utilities -> Disk Utility, and then click the New Image icon to
get started. Give the new image a name - an inconspicuous one like AP_History_Final_Essay is a good choice, as it'll hardly be given a glance in passing. Choose the size you want the disk image to be. If you're only going to store pictures and documents, 10GB should be fine. If you're going to be hiding videos, however, making it 20GB+ is better. Set encryption to AES-128 and choose a password. Format it to 'Read/Write Disk Image'.
After the image has been created, double click to mount the image. You will be prompted to enter the password you choose. Enter it to open. Copy in the files or folders you want, then unmount the file by dragging it to the icon of a trash can on your desktop. Now that you're certain it works and everything is set up the way you like, you can add a ' . ' at the beginning of the title to hide it. This will make it even more difficult to locate.
Note: This method won't deter the most determined or knowledgeable snoop. If you've got secret data proving the existence of Area 51, or anything similar, I suggest hiring a professional to do the hiding for you. This method is only intended to keep a frantic thief from getting your stuff.
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