I am getting this message "Disk 0 (unknown Model) This disk cannot be copied when trying to "Migrate" my "C:" drive to an external disk of the same size. As far as I can tell disk 0 is the "C:" drive and therefore Paragon does not like it for some reason. The software is Partition Manager 10. This worked fine on a different laptop (Lenovo 410) which I no longer have. The current laptop is an ACER Aspire. This software also does not work on another laptop I have (HP Pavillion), getting the same error message. Does anyone have a solution for this? I can do anything required to the Acer as it has recently been configured with Windows 7 and has nothing worth saving. Thanks