Windows 10: Hyper-V - Create and Use VHD of Windows 10 with Disk2VHD

@Kari, Thanks for the tut rewrite. Very well done. I was able to create a new VM without any problems.

 

Hi Kari,Great re-write.I wonder if you can answer a hopefully simple question.I remember at the back of my mind trying this with a 1TB main drive and 1 TB secondary drive.The main drive had two partitions 250GB and 750GB approx with the OS+progs on 250GB (100GB used) and 750GB mostly empty (720+GB free).As I recall it, when I created the vhd using disk2vhd, it appeared to configure it internally as a 1TB drive even though I did not select the 750 GB partition i.e it had apparently had a 250GB drive and 750 GB of unallocated space. The actual vhd was only about 100 GB and on secondary drive with over 500 GB free). I know this as I managed to copy the vhd to a third 2TB drive on another PC, and when I loaded it it showed the 250GB drive and 750GB unallocated! To answer the obvious question, I did create a dynamically expanding vhd as the actual vhd would not have fitted on secondary drive if fixed.The problem was when I tried to run it in Hyper-V, it would not run it saying it did not have enough space i.e it would not let me use it if it could not reserve 1TB space on secondary drive.I then replaced 1TB drive with a smaller 160GB drive, cloning from 1TB drive using good old Macrium Reflect, then tried using disk2vhd and it worked fine.So my simple questions is*Biggrino you know if you (still?) need to have enough spare capacity on secondary drive to hold space equivalent to the WHOLE of primary drive?I could not see any option with disk2VHD to limit maximum siz of vhd.If that is true, you might wish to add a warning?