To use Windows from Boot Camp via Parallels Desktop, you first set the Parallels desktop to run Windows from the boot Camp partition. Run Parallels Desktop, select File-New in the menu bar, and select "Use Windows from Boot Camp" in the Virtual Machine Setup wizard.
In the next step, you will need to reactivate windows, check "I want to continue", and then click "Continue", and then automatically go to my boot Camp and wait for the upgrade configuration to complete.
The next move is to import windows and data from boot camp into parallels desktop. Right-click my boot camp in the list of virtual machines, select "Import Boot Camp ...", click "Import" to create a new virtual machine by importing data from the Boot camp physical partition.
Locate the location where you want to save Windows and data, and then click "Select" To start Windows from the boot Camp partition in the virtual machine and click OK.
Start Windows, in which parallels tools are automatically installed, but you will need to restart Windows, click "Reboot Now", and parallels Tools will automatically complete the installation, click "Reboot" and restart Windows again.
This completes the migration of the Windows system and its data from boot camp to parallels desktop.