I have a Hyper-V Core Server 2012 R2 with the following disks:

Disk 0: SSD    C:SSD (mount point to Disk 1)
Disk 1: HDD    C:    (boot drive)
Disk 2: RAID-5        (not mounted)
Disk 3: RAID-0        (not mounted)

I want to clean disk 2 and create a new partition. I did the following:

C:Usersmark>diskpart

Microsoft DiskPart version 6.3.9600

Copyright (C) 1999-2013 Microsoft Corporation.
On computer: LITHIUM

DISKPART> list disk

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online          111 GB      0 B
  Disk 1    Online          232 GB      0 B
  Disk 2    Online           10 TB  1936 GB
  Disk 3    Online         3724 GB      0 B        *

DISKPART> sel disk 2

Disk 2 is now the selected disk.

DISKPART> clean

Virtual Disk Service error:
Clean is not allowed on the disk containing the current boot,
system, pagefile, crashdump or hibernation volume.


DISKPART>

I don’t understand the error I’m getting. How can I tell for sure which disk I have booted from? Here’s disk management if that helps:

enter image description here

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