How to change Sector Size for a VHDX File

Hi All

I got a Message in Best Practice Analyzer regarding 4k Sector Size and vhdx Files on this Disk.

There is a Solution described here: http://social.technet.microsoft.com/wiki/contents/articles/13075.hyper-v-avoid-using-virtual-hard-disks-with-a-sector-size-less-than-the-sector-size-of-the-physical-storage-that-stores-the-virtual-hard-disk-file.aspx

But there is no Link or Information how to do this Resolution.

Are there any more Informations?

Regards

Gargamelius