some partition is not displaying

sir/madam,

i have two harddisk,

first hard disk at c:\ partition installed windows xp, at d:\ partiton part install windows server 2003 and other two partition have data.

sedond hard disk have three partition.

when i open xp then all 7(4 partition of 1 harddisk and 3 partition of 2 harddisk) partition are displaying.

when i open windows Server 2003 then only first harddisk partition(only 4) are displaying.

why all 7 partition are no displaying in windows server 2003

first hardisk is master and second harddisk is slave.

please help me, thanking you.

(pranay)