boot partition messed up after re-installing OS X

[Nirmal Govind <nirmalg@psu.edu>]

Hi.. I just reinstalled OS X on my Mac partition and now when I boot I get a 
question mark for a second and then it shows me the screen where I need to 
hit x for OS X or l for booting Debian... my original bootstrap partition was 
on hda9 and Mac OSX on hda12, Debian on hda14... now it seems like it isn't 
booting off hda9 on first try for some reason.. actually, I tried runing 
maconlinux and it doesn't even seem to detect hda9 as a possible boot 
partition... any idea how I can restore things to how they were so that when 
I boot up, I get the screen which asks me to either hit x or l?

Thanks,
nirmal