Reinstalling windows 7

My present boot camp (50 Gb) is becoming too small (1.6 Gb left) so I would to increase the size of my boot camp
I have several question in this regard
Is there anywhere I could get instructions how to do this?
Will I need to reinstall Parallels
What would be the biggest size of Boot Camp that I could have my present HD has 472 Gb free
I am planning to do a restore from my External HD to reinstall the files in my present Boot Camp
Any recommendation will be appreciated

 

Hello JuanPerez.
If you have a Windows Virtual machine based on BootCamp partition , it is not possible to increase the hard-disk size of this Windows Virtual machine with Parallels settings, as the BootCamp partition is one of the partitions on your Mac's hard-disk.
You will have to import Import your Boot Camp partition into a Parallels Desktop virtual machine, which will create a new pvm bundle in the name "Imported My BootCamp.pvm"
In order to import your Boot Camp partition into a Parallels Desktop virtual machine, please refer the KB article http://kb.parallels.com/113658
Double-click on your .pvm file to start your Virtual Machine.
You can increase the hard-disk size of this Virtual machine , please follow the steps as in the KB article http://kb.parallels.com/113972 , to increase the hard-disk of Windows Virtual Machine & check how it works!