There is not bookmarks directory. Firefox uses a data file to store bookmarks. https://support.mozilla.org/en-US/kb/import-ie-favorites-other-computer Import Internet Explorer Favorites from another computer This article describes how to get Internet Explorer Favorites from another computer into your Firefox Bookmarks. https://support.mozilla.org/en-US/kb/import-bookmarks-internet-explorer Import Bookmarks from Internet Explorer Firefox lets you import bookmarks, settings and data from Internet Explorer. This article gives you step-by-step instructions for getting it done.

You can export the bookmarks on the old computer to an HTML file and import this file on the new computer. *http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox *https://support.mozilla.org/kb/restore-bookmarks-from-backup-or-move-them