Not sure what you're trying to do. "chroot" allows you to change your root directory. I've used it with Gentoo to move from a Live CD system to my new build to allow me to tidy up and finalise the build.
Can you tell us what Distribution you're running, 32 or 64 bit and what you're actually trying to do? A fuller explanation may help with an answer.
Oh! and Welcome to LQ!
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