Ved to tam vidis aj sam keby sa pozorne pozeras. Tu mas vysvetlenie co znamena co.
The multi(x) parameter is used to set the disk controller number, where x=0,1,2,..
The "rdisk(n)" parameter is for the HDD drive number, where n=0,1,2,... depending upon which physical drive this HDD is in your system. The "partition(p)" parameter is its partition on that drive, where p=1,2,3,... in order, counting from a 1 (not a zero).
Podla tvojho vypisu vidis, ze tvoj bootloader hlada xp na prvom disku na druhej particii, kde sa system nenachadza.