Thanks for your reply. Sorry I have not gotten back to you sooner. Unfortunately, I believe your suspicions were incorrect. When I move the drive as described in the original note, it appears to have the original machine name and some other identifier (key?) imbedded in the encryption process. As a result it appears to compare the machine name to the new machine name and as they do not match, it will not recognize the encryption phrase. If I return the drive to the original machine in which the PGP was originally installed, it operates properly. I am the rightful owner of all of the hardware and PGP license. There should be a way for me to move my encrypted drive to another laptop to preclude rebuilding the drive. Is there a way to unencrypt the drive prior to removal from the original machine, and once relocated to re-encrypt the same drive with the same contents and the same PGP license? Look forward to your or other's input.