This simple guide, explain how to make dualboot between Windows 7 anda Leopard. Other version MacOS ( Tiger and MacOS ) can too. Use EasyBCD from Neosmart.Net.

What you need:
a). Leopard or Snow Leopard  DVD.
b). Windows 7 DVD.
c). EasyBCD 2 Beta. (Link included, scrool down)

Now lets start.

1) Install Windows 7.
If you already got it installed, then you dont need to reinstall it.

2) Install Leopard.
Well, theres plenty of guides on how to do this.
Use any of them.

3) Make windows partition active.
Once you installed Leopard reboot with the DVD in the drive.
Press F8 while at Darwin Boot Loader, type -s and press Enter.

Type the folowing commands:

fdisk -e /dev/rdisk0
flag 1
quit
reboot

Now remove the DVD from the drive.

4) At this point you will need the Windows 7 DVD.
Insert the Windows 7 DVD in the drive and boot from it.
Chose the lagnuage settings and then click Next.
Chose Repair at the bottom.
It should print you with a windows telling that it found some boot error.
And it asks you to Reboot the PC to fix it.
Press Reboot.

Now you should be able to boot into Windows 7

5) Install EasyBCD.
Now you need EasyBCD 2. (I used the Beta version) .. download from Neosmart.net Forum
Install and launch it.
Go to Add/Remove Entries and select the Mac tab at the bottom.
It will look like this:

Keep the default settings and press Add Entry.

All done. Now reboot and chose the OS you want to Boot.

source tutorial :  Hackint0sh.org

image from : yuanlukito.wordpress.com