Install FileVault thumbdrive on Mac OS X 10.8 (Mountain Lion)
- Insert your thumbdrive into your computer. Move your cursor to the thumbdrive icon and control-click. You will see the diagram below. Click on Encrypt <Drive Name>. In this case, it is UNTITLED.
![filevault-installation-OSX-ML-011](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-011.gif)
- You will then see this dialog box.
![filevault-installation-OSX-ML-021](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-021.gif)
- Key in the password twice and provide the hint (required). After that, click Encrypt Disk.
![filevault-installation-OSX-ML-031](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-031.gif)
- After you click on Encrypt Disk, you will not see anything in particular. If you want to know the status, control-click on the thumbdrive icon and you will see the menu below. Note the gray menu item Encrypting “UNTITLED”… . This means that the Mac is encrypting your thumbdrive. Once the encryption is complete, the gray menu item will change to black Decrypt “UNTITLED”.
![filevault-installation-OSX-ML-041](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-041.gif)
- In case you get the (error) dialog box below, it will mean that you have to reformat your thumbdrive. Follow the steps below.
![filevault-installation-OSX-ML-051](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-051.gif)
- Move your cursor to the top right hand corner and click on the Spotlight icon. Type Disk Utility and click on Disk Utility in the Applications list that appears.
![filevault-installation-OSX-ML-061](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-061.gif)
The thumbdrive will appear on the left pane. Select the thumbdrive and click Partition tab on the right.
- Click on Current below the Partition Layout. You should see this drop-down menu as below. Select 1 Partition.
![filevault-installation-OSX-ML-071](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-071.gif)
- Click Options … and you should see this dialog box. Select GUID Partition Table and click OK.
![filevault-installation-OSX-ML-081](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-081.gif)
- Click Apply. You should see the dialog box below. Click Partition button.
![filevault-installation-OSX-ML-091](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-091.gif)
Wait for the formatting to complete. Then you can do the encryption process as listed in the steps 1 to 4.
- If you do a Get Info on the thumbdrive inserted, you will see a dialog box similar to the one below.
![filevault-installation-OSX-ML-101](https://nusit.nus.edu.sg/wp-content/uploads/2020/02/filevault-installation-OSX-ML-101.gif)
- This completes the one-time installation process of the FileVault thumbdrive.