Disk became RAW after chkdsk operation

After chkdsk detected a wrong index entry and acted, a disk became RAW.

With diskpart, trying to clean it before formatting yields:

DISKPART> clean
DiskPart has encountered an error: The device is not ready.
See the System Event Log for more information.

Could not find any corresponding entry in Event Log > System

Then tried:

DISKPART> detail disk

ST8000DM 004-2CX188 USB Device
Disk ID: {500ACEB6-CDF0-47C2-882D-1905B6CD8F1C}
Type   : USB
Status : Online
Path   : 0
Target : 0
LUN ID : 0
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

  Volume ###  Ltr  Label        Fs     Type        Size     Status     Info
  ----------  ---  -----------  -----  ----------  -------  ---------  --------
  Volume 10                     RAW    Partition   7452 GB  Healthy

Given the result, it seems that the disk is alive.

Is there anything that could be done?