To migrate your firefox settings from XP to Windows Vista or Windows 7 you will need to copy the below folder with firefox closed.
“c:\Documents and Settings\ProfileName\Application Data\Mozilla” to “C:\Users\ProfileName\AppData\Roaming”
Firefox Private Mode is an instance of Firefox thatĀ does not save Cookies, Passwords, Browsing History, URLs typed into the search field or Temporary Internet files much like Internet Explorers inPrivate Browsing discussed previously. More info non Private Browsing at Mozilla’s Website here: http://support.mozilla.com/en-US/kb/Private+Browsing
There are a few ways you can instantiate this mode:
1. From within Firefox: Click on the Tools Menu and select Start Private Browsing (or use the Keyboard shortcut Ctrl + Shift +P).

2. To Start Firefox in Private browsing mode all the time we need Click on Tools -> Options, Then click on Private, Select Use custom settings for history and Tick the Automatically start Firefox in a private browsing session as shown below. I personally don’t like this method unless this is needed for shared computer you always want to be in private mode.

3. Start Firefox private browsing from a shortcut: Firefox does not let you have add a “private” flag to a Firefox shortcut by default like Internet Explorer does. To enable this functionality you will need to install the add-on “Private Browsing Command Line Flag“. This will enable you to copy your existing shortcut to Firefox and appendĀ -private to the string.

4. Another addon worth mentioning is the “Toggle Private Browsing” button addon. This allows you to add a private browsing button to your toolbar as pictured below. More information on how to setup the icon is available at the add-ons page.
