Protect USB Memory Sticks or drives with a Password

By Richard Mallion
One of the new features of Mac OS X 10.7 (Lion) is the addition of a new volume format, Mac OS Extended (Journaled, Encrypted).
This lets  you format a USB memory stick or drive so that its contents are encrypted. You’ll need to enter a password whenever it’s inserted/mounted.
1. Launch Disk Utility from your utilities folder in the applications folder
2. Connect your disk or memory stick
3. Select your disk in Disk Utility (Make sure its the correct disk) and click the erase tab
4. From the format menu select  Mac OS Extended (Journaled, Encrypted).

5. Click Erase
6. You will be prompted to enter the password that will be used to mount the drive.

7. Click Erase.
Once the erase is finished you will be prompted to enter the password every time you go to use the drive, thus protecting your data