Neither my Hard Drive or Desktop are visible in the left panel of Lightroom Classic. My folders are intact with photos that I've imported, but I'm confused as to why the Hard Drive and Desktop aren't available.
The hard drive should be a header in the panel, but your desktop will only show if you imported images that are located on the desktop. Lightroom is not a browser, it is a catalog application. It will only show those folders that contain imported images.