CHKDSK stops on stage 4

Thanks, unfortunately, I don’t know of any tool including DOS that will chkdsk an unallocated drive.  It looks like it is just one of the 4 and there is a rebuild feature on the RAID.  So I may be able to buy a new disk and let it rebuild.

Do you know how I can chkdsk an unallocated drive?  The disk will not be seen in the command prompt or recovery console.  Perhaps Western Digital has a tool for this?

Happy Thanksgiving!