Novell Doc: ZENworks 11 SP2 Full Disk Encryption Emergency Recovery Reference - Decrypting a Drive

9.1 Decrypting a Drive

Typical scenarios where you might need to decrypt a drive include:

ZENworks Full Disk Encryption was removed from the device before the drive was decrypted.
Decryption was interrupted abnormally (for example, because of a power failure).

To decrypt a drive:

Make sure you have launched the Emergency Recovery application and loaded the device’s ERI file. See Launching the Emergency Recovery Application.
In the Workbench tree, select the drive you want to decrypt, then click the Partition menu > Decrypt to display the Decrypt Drive dialog box.
Deselect the Decrypt only used sectors option if you want to decrypt all of the drive’s sectors (both used and unused).

Decrypting all sectors (used and unused) can take significantly longer than decrypting only used sectors.
Click OK to start the decryption process.