partitioning separate bootcamp disk...

[osin]

so I have separate disk for bootcamp which created only one partition to run windows. I would like to free up some space and create mac partition on the same disk.
while trying to make a partition via disk utility it shows a message that it can screw up the bootcamp partition and it is possible that windows won't run.

is it possible to do so?
if so can anyone post some advise how to do it?

thank you in advance...

[aaronw1986]

If it's possible you'd have to do it through Boot Camp Assistant, not Disk Utility.

[osin]

If it's possible you'd have to do it through Boot Camp Assistant, not Disk Utility.

Boot Camp Assistant allows me only to: "Erase disk and create a single partition for Windows" other options are "greyed-out"...

[osin]

does anyone has some experience with this problem?