I am trying to increase the size of a vhd using vhd resizer and diskpart. I have a hyper v machine. I had done this before and I think these were the same steps, but I am not 100% sure. I just bought a 3TB drive. I created two partitions 1.5 tb each (or whatever I had splitting it in two, they have some reserved). I tried to make my vhd 1.4 tb, so I loaded it in the vhd resizer tool, and set he size to 1.4 tb. This took over a full day and just finished.
Here is the link with the instructions:
http://kb.dutchalps.com/microsoftvirtualpc.htm#windows7
I attached the vhd in diskmanager then opened a command prompt and typed "disk part", "list disk", "select disk 4", "detail disk" and I got the following. I was expecting to see a volume, but I don't.
DISKPART> detail disk
Msft Virtual Disk SCSI Disk Device
Disk ID: 00000000
Type : Virtual
Status : Online
Path : 0
Target : 0
LUN ID : 1
Location Path : UNAVAILABLE
Current Read-only State : No
Read-only : No
Boot Disk : No
Pagefile Disk : No
Hibernation File Disk : No
Crashdump Disk : No
Clustered Disk : No
There are no volumes.
http://www.xtralogic.com/extend_fs_part.shtml