I started running line command 'diskutil cs revert <ID>' to decrypt a Time Machine backup volume on an external drive (WD Passport 1 TB). The Terminal command initiated with "Started CoreStorage operation on disk3 My Passport for Mac" A day later the process still appears to be running. Is this normal? I can't retrieve all information on the volume with 'diskutil cs list', that is the external disk containing the volume I'm trying to revert. Disk information is displayed as below image...it appears to running some kind of process also or can't retrieve further information on 'disk3. running macOS 10.12 on a Mac Pro, although the original volume encryption occurred on iOS X El Capitan. Thank you going forward.