March 30, 1979
14.2 IBM VK/370 eMS User's Guide

When you no longer need disks in your virtual machine configuration,
use the CP command DETACH to disconnect them from your virtual machine:
cp detach 194
cp detach 291
If you are going to release and detach the disk at the same time, you
can use the DET option of the RELEASE command:
release 194 (det
For more information on controlling disks in CMS, see "Section 4. The CMS File System." Section 1. What it Means to Have a CMS Virtual Machine 15