I am assuming the XP is no longer working and so you are unable to export bookmarks from the XP and import them on the Windows 7. Short answer, assuming both Firefox versions are recent is to over write the ''places:sqlite '' on the current version with the XP version. You may at the same time wish to migrate other [[profiles|profile]] data. See * [[Back up and restore information in Firefox profiles]] * [[Back up your bookmarks or move them to another computer]] * http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox *http://kb.mozillazine.org/Places.sqlite * http://kb.mozillazine.org/Locked_or_damaged_places.sqlite Please post back with how you get on, and any further questions. If you can clone a hdd you will probably be used to reading KB articles.

If there are problems with the places.sqlite database file then restore the bookmarks from a JSON backup in the bookmarkbackups folder. *http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox *Bookmarks > Show All Bookmarks > Import & Backup > Restore > Choose File