I've downloaded Firefox metro preview "firefox-18.0a1.en-US.win32.zip" & tried to install according to the instructions. But I didn't got the firefox tile on my windows 8 pc start screen. I've tried it with installer as well. Nothing happened.
There've been reports that the preview fails to install/run correctly if you're using a 32-bit version of Windows 8.
Also, can you look in the "All Apps" list that you can access by right-clicking a blank spot on the start screen and choosing "All Apps" from the bar that appears, and see if Nightly shows up in there?
It also requires the RTM version of Windows 8, so if you're trying to do this from the release preview, it probably won't work...
A final thing to check is the default program settings. Go to the start screen, and start typing "default", then choose "Default Programs" from the list. In the window that pops up, click "Set Your Default Programs". In the list of programs, select "Nightly", and then click "Set this program as default" to give it all of the defaults. Then go back to the start screen and see if the tile appears there.
i download the lastest nightly build 19.0a1 when i changed the default program into nightly, it's still open in desktop mode. is this a nightly bug ?
It isn't yet in the normal Nightly builds, you'll have to download the Metro Preview build: http://ftp.mozilla.org/pub/mozilla.org/firefox/nig
Beyond that, the Metro version will only open from the tile on the start screen, and only if it shows the new icon on the tile.
The requested URL /pub/mozilla.org/firefox/nightly/latest-elm/firefox-18.
Oh. Sorry, we're up to Firefox 19 now: http://ftp.mozilla.org/pub/mozilla.org/firefox/nig