Mark has a bunch of 1TB hard drives and he wants to be able to categorize the contents on them. Leo says he'll want to be sure he indexes the contents and then he can create a master catalog that he can print out. The trick is to make them offline so he can index them that way.
There are catalogers like WinCatalog that are designed for just that. There's a trial version that will let him try it out for free, with a personal license for $30. The chatroom says that Voidtools Everything is also good. DiskExplorer Pro is another option.