After installing Windows 7, my MacMini won't boot Lion anymore I installed Windows 7 Ultimate 32bits in a MacMini 2,1 using bootcamp. I used a DVD media with multiply choices trough an external sata superdrive with usb adaptor. Windows seams ok, with the exception that I can't eject the disk from that superdrive... things to solve later.

Problem is now it will only boot Windows. I tried to boot with Alt pressed and nothing. So I edited the BCD file with easyBCD 2.3, add the Lion in the list and check it as default. Now the boot stops in a text screen of Windows Boot Manager, both systems are listed in the middle. If I chose "NST Mac OS X", will appear a screen with a strange green animal at the top, the windows logo and a countdown below. I can press F8 to escape to a list os OS. This new screen got "Darwin/x86 Boot v5.0.132" description and three logos: OS X, Windows NTFS, Windows (the second HDD though)... and the strange animal above. If I chose the Apple logo, it will returns to first text screen.

How can I make it boot Mac OS X Lion again?

EDIT. Photos of the screens:
So a guy in MacRumors ask me why I didn't install the Boot Camp drivers in Windows yet - I don't know, nobody mention this before (or I really miss this part). The package is more than just drivers, will install a control panel similar to OS X and will change the boot either - just what I was looking for. After install it, I could finally boot from Lion just by selecting in the list of the control panel.

Unfortunately, I cannot copy-paste the link for the Apple page about those drivers because the site will auto switch to pt-br... I think you will find it easily by searching support.apple.com with google. You got to look for instructions about installing old versions of Windows in old Macs, there is an article about this. Just a warning: each system/Windows require a specific package and version (4 ou 5). Pick the right one and you will be happy.

If you got the link in english, please share with us.