Look at https://support.mozilla.org/en-US/kb/profiles-tb#w_how-to-find-your-profile to locate your profile on the recovered disk. If you are just starting TB with a new profile, the simplest thing to do would be to copy the recovered profile to the directory where your current profile is located. Then switch; see https://support.mozilla.org/en-US/kb/using-multiple-profiles to switch to the other profile If you have stuff in your current profile you need to save or merge, let me know and I will give you further instructions.