Thanks for attempts to help, nothing worked so now having to go back to old backup and take consequences.
Workstation caused this problem simply using built in defragrmentation option decided I had a virus (pretty **bleep** sure wasn't, dev machine with VS, Postman, Node.JS etc).
That is what removed the slice.
@wila diskmanager was tried much later in the process to try and recover, it was not the cause. The slice replace didn't work either. Started to load VM but then errors and windows options to repair appeared, tried all the options but none would work 
Not first time had workstation "utilities" cause problems. Its great when working as intended, awful when a problem.
Lession learn't, make more frequent backups and DEFINATELY dont use any of the VMWare tools until a backup done as well.