Have new Windows 8.1 desktop computer. have three catalogs on external hard drive. Have downloaded Lightroom 5.6 on new computer. How do I connect the external HD catalogs to Lightroom on new computer?
Moving this discussion to the Photoshop Lightroom forum.
Plug in the EHD, find the catalog files in your operating system and then double-click on them (or move the catalogs to your internal HD and then double-click on them). Inside of Lightroom, reconnect the files using these instructions: Adobe Lightroom - Find moved or missing files and folders