LODIMGCLG
From MidrangeWiki
Command to load a Image Catalog.
Once you're through with adding your ptf volumes to an image catalog, you'll want to them against a virtual optical device. See other directions on creating a virtual optical device. I'm using optvrt01 as the example here.
LODIMGCLG IMGCLG(PTF) DEV(OPTVRT01) OPTION(*LOAD)
Once you're through with the image catalog, and it's time to dispose of it, then you'll need to unload it.
LODIMGCLG IMGCLG(PTF) DEV(OPTVRT01) OPTION(*UNLOAD)