In my boost settings, I see a cache directory setting but no cache path setting. The cache directory just gets set in my drupal root directory. Is it possible for me to indicate that I put this cache directory somewhere else higher in the chain? Boost wants to put the cache directory in the core files directory where we upgrade drupal core. So the next time we upgrade drupal, we'd need to remember to move the cache directory into the new core directory as well. We'd like to move cache one level higher, but I don't see a way to do that in the settings.
Is there something I'm missing?