You can perform disk encryption by using the Select Key option. This operation converts the disk status from clear to crypto by using an existing disk key.
To perform disk encryption using an existing key option, follow these steps:
1. Select the disk and click Manage Disk Encryption.
a. In the Manage Disk Encryption: Settings screen, click Change disk encryption status.
b. The Current Status will be Clear. Select the required action Encrypt from the Action drop-down list.
c. For disk encryption, ensure that the Prepare Data check box is not checked.
d. Click Select Key and select a key from the drop-down list. Click Next.
2. Click Confirm in the next screen.
The percentage of the disk preparation is displayed. Wait until the status shows 100%.
When the disk encryption is completed successfully, the disk status turns to Crypto.