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I use Windows 7 and Mac OSX on macbook pro using bootcamp, few hours back I installed the windows 8 as well without using rEFIt or any other tools.

Now the problem is I always see Mac OSX and Windows as boot option.

When I choose windows 7, the laptop boots into win8. I even tried to change the start up disk from "Start up but still the win8 was loaded.

How do I load the Windows 7 back?

Here's the screen shot of startup disks I have.enter image description here

Untitled Windows is Win8, Bootcamp windows is Windows 7

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You need to change the Windows 8 boot process to include the older Windows 7. It won't be doable from OS X. – user3463 Jan 24 '12 at 19:06
    
@Randolph Thanks, how can I do it? – Prashant Jan 24 '12 at 19:13
    
I don't know, because I've not installed Windows 8 anywhere. I'm sure you'll find something if you search for it. – user3463 Jan 24 '12 at 19:36

In Windows 8:

  • Open your desktop,
  • Open a Explorer window,
  • Find the Control Panel in the address bar,
  • System & Security -> Sytem,
  • Click Advanced System Settings in the sidebar,
  • (Shortcut: open the startmenu and type Advanced system settings, then click the Settings tile)
  • In this dialog find the Advanced tab,
  • Click the Settings button in the Startup and Recovery part,
  • Here you can change your default os or you can set a timer so you can choose which version of Windows you want to start.

In the future don't install a developer preview if you don't intend to use it.

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