how do I restore old history even after not selecting the restore
I did not get a chance to select the restore feature and firefox exited with a lot of import tabs and links up. Then, it just restored an instance with one tab, instead of the many tabs with important info. I see there is a book mark history, is there a session history for previously used tabs and their urls? Unfortunately, I had just before that, selected, to close history when firefox exits and when it crashed, it cleared that history.
Opaite Mbohovái (2)
If you have it to clear history when it exits, and you exit, you won't get sessions back. Sessions are considered part of history. Sorry.
There still may be hope. Find your Firefox profile and look for a file called sessionstore.bak. This is a backup file of your sessions.
Delete the sessionstore.js file then rename sessionstore.bak to sessionstore.js. Then open Firefox. Make sure Firefox is closed during all these steps.
To find your Firefox profile: https://support.mozilla.com/en-US/kb/profiles#How_to_find_your_profile