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With the release of firefox 3 you be wondering wheter you can run both versions of firefox at the same time, well some people will tell you you cant but you can.
It all boils down to 2 things, the profile manager and the shortcuts.
This post assumes that you know how to use the advanced installtion of firefox and have firefox version 2 in one folder and firefox version 3 in another (in my case “C:\Program Files\Mozilla Firefox 2″ and “C:\Program Files\Mozilla Firefox 3″)
Start by making 2 different profiles in the profile manager, to do this make sure firefox is closed and its not running in the background.
Run the profile manager by running the following command…
“C:\Program Files\Mozilla Firefox 2\firefox.exe” -profilemanager
Remember to change the Firefox directory to where you have installed firefox.
Within the profile manager make a new profile call it whatever you want. In my case just for ease i have called them Firefox2 and Firefox3.
Now I’m not sure if the following shortcut syntax works with Firefox3, but I add it just to keep consistency.
“C:\Program Files\Mozilla Firefox 2\firefox.exe” -P Firefox2 -no-remote
As with before make sure you change the directory to where you installed your version, and do the same on the firefox3 shortcut but change the profile name.
“C:\Program Files\Mozilla Firefox 3\firefox.exe” -P Firefox3 -no-remote
And viola, you can run two versions of FireFox along with your 3rd favourite browser.
As a quick sidenote if you want both firefoxes to have the same bookmarks, history, etc… just copy the contents of the orignal default folder to the new profile you’ve made.
C:\Documents and Settings\USERNAME\Application Data\Mozilla\Firefox\Profiles
The default folder should read something like…
Just copy the contents of that folder into your new profile folder.
And yes, I run three screens simultaneously.