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I have used:
sudo sh -c "echo UUID=`diskutil info /Volumes/WD\ SmartWare/ | grep 'UUID' | awk '{print $NF}'` none hfs rw,noauto 0 0 >> /etc/fstab"
to deactivate the VCD but now want to lock the drive again using the VCD so i'd like to reverse the above code. But i'm a bit unsure what code i need to use as etc/fstab didn't exist originally.