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That depends on where in the boot cycle it is hanging as I believe that verbose mode only applies once booting has been handed off to the OS (though I could be wrong as I rarely use verbose mode).
When you say you have a white screen, do you mean the light grey with the Apple logo or something else? If it is prior to the Apple logo, then there is likely some bad hardware causing the issue. If that is the case, i'd suggest bringing it in the house and running some diagnostics on it to see if you can find the culprit (could be your drive, it's controller, the mother board, bad RAM, or something else seemingly unrelated that the EFI tests at boot).
Apple support will probably be your best bet if you still have AppleCare on it.
-dave
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