I have a feeling that I'm not framing this question properly and for that I apologize, nevertheless:
My ArcGIS licensed products are on computer A. My map data [.mxd, rasters, layers, etc.], including geodatabase, are on Computer B. I do this I as I have offisite backup attached to Computer B. Computer A has only local backup.
Computer B is threatening to go south so I bought a replacement for it; called Computer C.
I copied the database and map files from Computer B to Computer C, using the same directory names on both.
i copied the .prj and .txt files and related subdirectories [which are in a subdirectory \ArcGIS on Computer B] to Computer C, keeping the same subdirectory name.
I reset the Home directory in the Catalog so that it points to Computer C. When I restart ArcGIS, I see the new Home directory.
When I go to load a map [.mxd], however, I'm seeing the base map in it's proper extent, but I'm not seeing the layers that are associated with the .mxd file. If I, however, authenticate to Computer B [the old one], all is well. Obviously I've missed some step in the transfer, but I can't work out what that might be.
Would very much appreciate a pointer to the appropriate part of the ArcGIS help file that explains this. [I've tried various search options on the Help file, but never seem to get quite the right set of search words].
Many thanks, Bill Cole