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How Do I Encrypt My External/USB Device for Windows Use?

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titleClick to see options and steps to complete encryption...

When you connect a non-encrypted External/USB storage device to your computer, a BitLocker Drive Encrytion pop-up dialog appears.

  1. Choose → Encrypt this drive using BitLocker Drive Encryption

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  2. Enter and Re-enter a password you will use to unlock the drive, then click Next

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  3. Choose → Print the recovery key> Print/Save to PDF, then click Next.

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    Click on this image to enlarge the screens/see the highlighting more clearly.

  4. Open the saved .pdf document to verify your Bitlocker Drive Encryption recovery key information is generated correctly. Here is a sample of what that information should look like…

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  5. Choose Encrypt entire drive, then click Next.

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  6. Click Start encrypting.

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  7. BitLocker displays a progress bar while you wait for the encrypting to be completed.

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  8. Once completed you will see a small lock shape on the USB Drive icon. Your Externel/USB drive is now encrypted and ready to store files more securely.

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Additional Information & Resources Related to Drive Encryption…

Encryption requirements for external disks are treated differently based on the device platform…

WINDOWS

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Windows requires all disks to be encrypted to have data written to them which can cause issues for some staff.

If you connect an external or USB drive to a Cal Poly Windows device:

  • It will require you to encrypt the device prior to before writing any data to it. 

  • You can opt to not encrypt the device, but it will remain read-only.

Windows Encryption Resources

MacOS

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MacOS does not encrypt external disks by default and will only enforce internal disk protection.

  • To encrypt external devices on a Mac you will need to utilize Disk Utility.

MacOS Encryption Resources

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  • Some exceptions may be allowed for external disks. Submit an exception request.

  • Once an external device is encrypted, it is recommended to save your secure passphrase to LastPass for future retrieval.

  • The official recommendation for file sharing on campus is via Microsoft OneDrive


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