Would you like to copy some important work files to a USB stick but are you afraid that someone will take it and view its contents without permission? Then don't think twice and create one encrypted USB stick, whose contents can only be read after entering a password. How do you say? Do you have a Mac? No problem.
With today's guide, we'll see how to encrypt a Mac USB stick using the tools included by default in OS X or a very useful third-party application. In this way, you will be able to create drives that can be used not only on Apple computers but also on Windows and Linux PCs. Let's get to work immediately!
If you want to know how to encrypt a Mac USB stick to be used exclusively on Apple systems, the first step you need to take is to start theDisk Utility located in the folder Other . Launchpad OS X and select the USB stick to encrypt icon from the left sidebar. Then go to the card Initialize, set the item Mac OS extended (journaled, encrypted) in the drop-down menu Format, type il name you want to assign to the device in the appropriate text field and click on the button Initialize located at the bottom right.
In the window that opens, type the password you want to use to encrypt your key in the fields New password e Verifica and click the button Initialize to save the settings and start formatting the drive. At the end of the operation (this should take a short time), you will have an empty but encrypted USB stick. This means that every time you insert the drive into your Mac (or any other Apple computer), to access its contents, add or remove files, you will be asked to enter a password. The key will no longer be recognized by Windows PCs until you format it again in FAT or NTFS by removing the encryption.
If you want encrypt a Mac USB stick but you also want to use it on Windows and Linux, I recommend using TrueCrypt. It is an excellent free and open source encryption software compatible with all major operating systems that allows you to encrypt entire drives making them inaccessible if you do not enter the correct password. To download TrueCrypt on your Mac, connect to the application website and click on the button Download collocato sotto the dicitura Mac OS X.
When the download is complete, double-click on it to open the file you just downloaded (eg. TrueCrypt 7.1a Mac OS X.dmg), click on your button Accept and run the installation package TrueCrypt 7.1a.mpkg right-clicking on it and selecting the item apri from the menu that appears. In the window that opens, click on Continue e Install, then type the password of your user account on OS X and click on the button first Install software and then Close to finish the installation process of TrueCrypt.
To encrypt a USB stick with TrueCrypt, start the application and click on the button Create volume. In the window that opens, put the check mark next to the item Create an encrypted file container and click on Next for two consecutive times. At this point, click on Select file, select the USB key to be encrypted, type the name you want to assign to the encrypted archive where you are going to insert your files and first click on Save and then Next for two more consecutive times.
Now you have to choose the space to reserve for the encrypted archive in which to place the files. I advise you not to go beyond 75–80% of the available space on the stick, so as to leave some free and unencrypted space for emergencies. Then type le size of the encrypted volume you want to create and click on Next, then type the password you want to use to protect the contents of the drive in the fields Password e Confirm Password and click again on Next twice. Finally, move the mouse a little in the window TrueCrypt to strengthen the encryption system applied to the key and click on the button Format to start the creation of the encrypted archive on the device.
At the end of the operation, to access the contents of the key you will have to start TrueCrypt, click on the button Select file and select the encrypted archive on the drive. Next, you will need to click on Mount and type the password to decrypt the contents of the device.