Thank you, Dave. May be it is not in pure powershell, but it works! I appreciate.
Steve, yeah I don't want to longer have a drive letter assigned, but do not remove drive. I don't want to hide partition, of course I can do it (in user space) from registry.
Specifies that the automatic assignment of a drive letter is disabled. This is only honored for GPT disks. This attribute is useful in storage area network (SAN) environments.