i decided to dual boot windows 7 with vista. i shrunk the partition on vista and then installed 7 on the new partition. the problem now is that the dual boot screen at startup does not show, as if windows 7 was the only os on my computer. i've tried reassigning the driver letters on the vista partition and changing the bootloader using easybcd but it doesnt work.

i want to boot back into vista. any help?
see thats the problem, the procedure i used to get where i am right now was basically the same as the step by step guide on the website. the problem here is that after windows 7 installs, the option to choose which os to boot from does not show up. it automatically boots to windows 7.

the answer is by Ryan :
http://maketecheasier.com/how-to-dual-boot-win-vista-with-windows-7/2009/01/11