I've tried to install Windows on the new 24" iMac for whole day long without luck. 1. In the beginning I've no idea who Boot Camp works, so I followed the old styled Linux daul-boot experience on a PC: I made 3 partitions, two J-HPS+ for Mac OS X and one is "free-space". 2. After installing Mac OS X and finished transmitting all my user data, apps and files, I downloaded Boot Camp 1.1.1 and launched it. Soon I got the error message, I can not install Boot Camp on the disk with more than one partitions. So I grabbed the driver image from the Boot Camp Assistant package content and burned it into a CD. 3. I've iPartition installed previously. So I attached an external firewire drive to iMac, cloned the startup disk, and boot from the external drive. Then I launched iPartition, added a FAT32 partition in the free space, and reboot from the Windows XP SP2 CD. But Windows installer could't recognize the FAT32 partition: it could only see the whole disk space as an "Unknow" partition. 4. I went back into iPartition again, reformat the FAT32 partition into "PC partition (MBR)" and run Windows installer again. It still said that there is only one "Unknown" partition on the disk. 5. I put another hard-disk into the external firewire case, and run Windows installer again. Windows installer caught the external drive as one "Unknown" partition, of course. Then I deleted the partition with Windows installer, created a new partition, when I tried to install Windows on that partition, it said that I need "special software" to support booting from that device. 6. Went back to Mac OS X, I can see the partition on the external drive with disk utility. Then I open terminal, and tried to format the partition to FAT32 with "newfs_msdos -F32" command. This command executed without problem. After that, I reboot into Windows installer again, it saw the partition with correct size and format (FAT32), but it still said that I'll need special software. 7. And then, I gave up. From the procedure I've figured out several things, please correct me if I'm wrong: 1. You can install and boot Windows on an external USB drive, but not on an external firewire drive. 2. You can only install Windows on the MRB partitions created by boot camp. Other 3rd-party partition tool will not work. And my question is: I just want to run Windows natively on a iMac 24" with two existed Mac OS Extended partitions, for god sake what should I do ?