Step-by-step bookmark recovery
http://kb.mozillazine.org/Lost_bookmarksIf you don't see your bookmarks when you open Firefox or Mozilla Suite, the bookmarks file may have been damaged or the contents deleted. Firefox automatically makes up to five daily bookmark backups, with newer backups replacing the older copies, so you must act quickly, before they are all overwritten. However, there are other reasons why your bookmarks may be missing, so it is important that you follow all of these steps:
1. Firefox and Mozilla Suite store user data in a separate place for each user account on your computer. Make sure you are logged on to your computer with your usual logon name.
2. Mozilla browsers allow you to store different sets of bookmarks and other user data in separate profiles. You may have created a new profile in the past for troubleshooting or other reasons. Make sure you are using the correct profile (see Multiple profiles and profile in use, below).
3. If bookmarks appear in the Bookmarks Manager but not in the main menu, and they can't be edited, try the fix for a corrupt localstore.rdf file, given below.
4. If your problem is still not solved after doing the above, see Finding your bookmarks and Restoring bookmarks from backup (below). To identify the correct backup file, you can open and view bookmarks files with your browser.
5. Other methods of recovery
Preventing future problems... more....
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Firefox and Mozilla Suite store bookmarks in file "bookmarks.html", located in the profile folder.
There is also a "bookmarks.html" file in the program folder, but this one is only a template and does not hold your bookmarks.