Bootloader problems, what partition?

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http://www.linuxquestions.org – Ok so i've installed dual boot, windows 7 and backtrack4, grub loads and when i boot backtrack i get errors, I researched the errors and from what ive gathered the bootloader is installed on the wrong partition, at the end of the backtrack install if i click advanced i can specify bootloader partition. Which one would work, what partition is the bootloader normally on (HowTos)