Seems to me that your question...is immaterial, if you use a boot loader. I haven't used anything other than the Windows boot files in ages...but I would imagine your choice of boot loader determines what options you have for booting.
If you were installing XP and using the native boot files, your Master/Slave comment would still not be pertinent. Master/Slave/Cable Select settings only matter when two devices are installed on one cable. IDE cables are the only ones which allow for two devices, SATA cables are 1 for 1.
What matters (when booting) is which partition is active...and which hard drive your selected active partition would be on (this can vary with every boot, if you so choose).
I think I don't understand what you are trying to ask...wait for comments from someone else with more understanding
FWIW: The boot order in Windows would also determine which drive would boot. EXAMPLE: I have a motherboard with SATA support and 3 SATA drives, while I have XP installed on my singular IDE connection. I currently boot the IDE drive...but I could just as easily have installed XP on a SATA drive and booted that, rather than the IDE drive.
Edited by hamluis, 06 July 2008 - 01:05 PM.