Triple Boot: Remove Linux without data loss

[gkr41]

Currently i have a triple boot system with Windows XP, Mac OS 10.4.9 and Ubuntu. I'm using GRUB as bootloader, but since I've stopped using Linux, I want to remove the Ubuntu partition and redistribute the remaining space to HFS and FAT32 partitions. Is there any way to set Darwin as the bootloader without reformatting the whole hard disk?

 

 

The hard disk is separated like this:

• active - Windows XP (NTFS)
  
• active - Mac OS 10.4.9 (HFS+)
  
• active - Ubuntu (ext3)
  
• extended partition with:
  • logical - Ubuntu swap (linux swap)
    
  • logical - Shared partition (FAT32)