Support Is it possible to boot EVO 4G LTE from SD card?

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http://androidforums.com – My EVO got stuck in endless loop of reboot... Power goes off and normal booting starts up and lasts fro about 25 sec past Sprint flying yellow screens... than it powers off again. Any options to recover from boot menu ( short of Factory reset) didn't work. Now... the PROBLEM is that I have really valuable for me data , texts and images trapped now in the onboard memory chip ... I would LOVE to recover them before nuking the phone... So I believe that the phone searches actually SD card first - using and analogy to old PC systems I would love to boot the phone using some even p (General)