Upgrading Firefox Portable
To upgrade to a newer version of Firefox Portable, just install a new copy of Firefox Portable right over your old one. All your data will be preserved.
If you're upgrading from Portable Firefox (older name and directories), make a copy if your existing profile folder within the PortableFirefox\Data\profile directory on your portable drive. Then download the new version of Firefox Portable and copy your profile from the old version into the new version within FirefoxPortable\Data\profile.
If you added any plugins or searchplugins, you should copy those directories as well (PortableFirefox\plugins to FirefoxPortable\Data\plugins and PortableFirefox\firefox\searchplugins to FirefoxPortable\App\firefox\searchplugins).
Copying Your Local Firefox Settings
If you're using a local copy of Firefox, you may wish to just copy your local Firefox settings right into Firefox Portable. Your local Firefox profile is usually installed in C:\Documents and Settings\[user]\Application Data\Mozilla\Firefox\Profiles\default.???\ Just copy the contents of that folder (except the cache directories) to the FirefoxPortable\Data\profile directory.
Then, and this is important, delete the file FirefoxPortableSettings.ini within the FirefoxPortable\Data\settings directory, if there is one.
When you start Firefox Portable for the first time, it's recommended that you turn off disk cache, password saving and history if you're using a flash-based portable device.
You can set all of these within the Privacy tab of the Firefox Options window.
Sometimes, certain profiles will cause the launcher to fail or hang. It's best to give it a few minutes to see if it's just checking compatiblity and adjusting the locations of the extensions before giving up on it. If it fails, it is usually due to an incompatible extension.
Here's a list of different things you can do to speed things up:
Disable Cache, History and Form Saving - Cache is disabled by default. In newer releases of Firefox Portable, history and form saving are enabled. You can disable these within the Options window.
Disable Session Restore / Undo Close Tab - Firefox 2.0 introduced a new feature called session restore. It keeps track of all your open windows and tabs and can restore your session if Firefox should crash. While a handy feature, it does have the unfortunate side effect of writing to disk on every page load, which slows down Firefox Portable. There's no option to disable it in the usual Tools - Options windows, but you can disable it manually.
When you restart Firefox, session restore (and undo close tab) will be disabled and you should notice an improvement in browsing speed.
- In Firefox's address bar, type in about:config and then hit enter
- Right-click on any entry and select New - Boolean
- For the name, enter browser.sessionstore.enabled and click OK
- Select false and then click OK
Disable Anti-Phishing - Firefox 2.0 comes bundled with an anti-phishing filter that warns you of fake sites pretending to be things like ebay and bank login pages. As with the ression restore, though, it results in additional writes to the drive. This is especially noticable in the first few minutes of using Firefox Portable as it has to download the anti-phishing database and store it within your profile (a 3mb+ file). You can disable this feature by clicking Tools - Options and then selecting the Security tab. Uncheck the box next to "Tell me if the site I'm visiting is a suspected forgery" and then click OK. The anti-phishing filter is now off. If you'd like to get back the space taken up by the database of forged sites, exit Firefox Portable and then head to the FirefoxPortable\Data\profile directory on your drive. Delete the urlclassifier2.sqlite file.
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