Qfyilyi

I want to create a vhdx file and then initialize it and then create a single volume inside it. I know the volume size. How do i calculate the disk size that i have to create the vhdx file with?

I want the partitioning type(GPT/MBR) to the be same as the source disk of the source volume(but the source disk could have multiple volumes, so i cannot directly use the source_disk size). Also for GPT how do I find out the size of the MSR partition that windows creates when I initialise the disk beforehand so i that i can increase the disk size by that much. I know that it can be anywhere between 16MB and 256MB.

Lets say the disk_size that i create the vhd(x) is ds.

MBR:

After initialisation = ds - a

After partitioning with single paritition = ds - a- b

Usable space in partition = ds - a - b - c(2MB! ?)

ds = volume_size + a + b + c



GPT: 

After initialisation = ds - a'

After creating msr = ds - a' - msr'

After partitioning with another paritition = ds - a' - msr' - b' 

Usable space in partition = ds - a' - msr' - b' - c'(2MB! ?)

ds = volume_size + a' + msr' + b' + c'

I know the volume_size, I want to find out what ds should be. And for that I want to find out a, a', b, b', msr', c, c'.