How to Encrypt your Removable USB Media


  1. Click on the Windows icon 

  1. Type Bitlocker and select “Manage BitLocker” 

  1. On the “Removable Data Drives” section expand the section at point 1 and then click “Turn BitLocker On” at point 2. 

  1. Allow it complete the initialisation of the drive 

  1. Tick “Use a password to unlock the drive” and create a secure password using Upper and lower case letters, numbers, symbols and spaces. Click Next 

  1. Backup your recovery key. Click “Save to a File” and click next. This is important. If you forget your password you need the recovery key. Save the file to your laptop and you could also copy it to your Griffith College OneDrive account as an extra backup. 

If you have set BitLocker up on a domain joined PC IT Services should have a record of the recovery key. 

  1. Click “Encrypt used disk space only” option and select next 

  1. Select “Compatibility Mode” option and select “Next” 

  1. Click “Start encrypting” on the next screen 


  1. You will see the drive encrypting. Allow it to complete before removing the drive.  

  1. Below will show when completed 


  1. Plug in the USB drive 

  2. Open File Explorer and navigate to the drive. You will notice it has a lock beside it. Click on the drive 


  1. Enter the password you created and click “Unlock” to access the drive 

  1. Plug in your Removable USB Media. You should see it appear on the Desktop 

  2. If the Removable USB Media is already formatted for Mac right click on the drive and click Encrypt <Drive Name>” 


  1. Enter a password for the drive, confirm the password, enter a hint and click “Encrypt Disk”. Note if you forget this password you won’t be able to retrieve any data on the drive. 


  1. Locate the drive on your Desktop or in Finder 


  1. Enter your password and select “Turn Off Encryption” to decrypt the drive 


  1. Open Spotlight and search for Disk Utility 


  1. Locate the removable usb media and click on the main heading, point 1, for the drive and then select “Erase” at point 2. 


  1. Name the drive, under “Format” select “Mac OS Extended (Journaled)“ and under “Scheme” GUID Partition Map. Click “Erase”