oh **** help me out with this dual booting problem!

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http://forum.xda-developers.com – Guys i tried dual booting with dorimanx siyah kernel , i have Neatrom Lite installed , and wanted to have my previous rom also on my phone which is Cm10 nightly version ... i flashed 2nd(cm10 nightly) rom this way.. Wiped 2nd ROM data/cache, wiped the dalvik cache. Installed 2nd ROM from Internal SD card, and i Rebooted system *problem is it was endlessly loading my neatrom .__. i wanted to keep using Neatrom and later try JB cm10 , on boot ofcourse theres a msg saying press home button to enter secondary rom :) so what i did now was i just shut it off and i pressed home button it succesfull (HowTos)