Virtualize.dk

Download EASEUS Todo Backup, here

Clone the systemdrive to a newly added bigger HDD

Now Extend the volume to fit the bigger HD

To extend a basic volume

1. Open Command Prompt.
2. Type:

diskpart
3. At the DISKPART prompt, type:

list volume

Make note of the number of the basic volume you want to extend.
4. At the DISKPART prompt, type:

select volume n

Selects the basic volume, n, you want to extend into contiguous, empty space on the same disk.
5. At the DISKPART prompt, type:

extend [size=n]

Eg: extend size=22000

This extends the drive with 22GB