Trying data migration from Toshiba with Windows 7 - HDD 580GB capacity with 461GB used to EVO 870 500GB capacity. Samsung data migration software will not migrate data and shows 870 EVO with Total Capacity of 0.0GB and states "553.7GB of additional space is required on Target Drive to clone the Source volume (C). You can continue cloning after selecting a sufficient quantity of files to exclude." Thoughts? Thank you for your responses.