When trying to fix a minor problem, tech support at HP wiped everything off my computer. I have reinstalled Lightroom4 and reloaded my files from backup drive (all that were under my user name previously). I cannot locate the LR catalog. Can you help me relink my old catalog? I have over 10,000 pictures and this is critical to me. I am on Windows 7 operating system.
The default location and filename of catalogs on Windows 7 systems is:
"C:\Users\[youruser]\Pictures\Lightroom\Lightroom 4 Catalog.lrcat"
Along with it there should be a folder containing the previews called "Lightroom 4 Catalog Previews.lrdata".
If you can't find the catalog there, you might not have been using the default catalog name and location.