mohan kumar - 2012-08-28

I tried to install RHEL5.7 on my windows xp system using a USB stick(using iso2usb), but it doesn't load grub when i unplug the usb stick after the installation is complete. on putting the usb stick back to the system, it works fine. can anybody help me in this connection?
I want the system be fully bootable in dual mode after the removal of the usb stick.