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It is highly recommended to save the file to your OneDrive in case something happens to the workstation you are on. This way you will always be able to retrieve the recovery key.
6. There are two options to encrypt the removable device.
Encrypt used disk space only will not work for the policy CW has in place.
Choose Encrypt entire drive. Then click Next.
7. The last step before conforming is to choose whether the removable drive will be used only on that workstation or on different workstations.
It is recommended to choose Compatible mode in case the workstation is replaced.