How to add 2nd zvol to existing VM with Windows 2012 server

[Jherun]

While installing MSSQL on the 2012 server VM, it failed because the sector size of the VM disk was not 4096. In order to avoid reinstallation of the 2012 server, I figurred adding a second zvol with the right sectorsize and attach it to the VM. Creating the 2nd zvol was no problem, I added a new disk to the VM in FreeNAS, but I don't see the disk in WIndows. What do I need to do to make this 2nd zvol available inside WIndows. Thx