If you have the backups of your catalog file, and backups of your photos, and backups of your presets, I think that is everything. All backups must be on a different disk than the original. If the backups are on the same disk as your originals, then you don't have a backup at all.
If you are going to change the name of one of those drives — DON'T DO THIS. Make your life simple.
backups catalog file = check
backups photos = check
backups of presets = ??
How do I back up the presets?
Thank you -
Great! so when I reinstall LR, what are the steps I should take?
Use your operating system, copy everything back to where it is now. Exact same locations.
As you take it to the Apple store, I assume it's a McBook (Pro). In that case, simply use Apple Time Machine to backup your entire disk, and if the hard disk does indeed get erased or replaced, use Apple Migration Assistant to restore the computer after this from the Time Machine backup. Couldn't be easier.