Access to Installed iAtKOS Mac OS X Snow Leopard 10.6

[elegant]

I had installed iAtKOS Mac OS X Snow Leopard 10.6 in my hard And It was good and had working normally, after changing windows 7 and reinstalling win7 I had lost access to OS X,how I can to make it to work again??

[chitchit]

put the iatkos cd back in and instead of selecting everything, only install the bootloader