I have a dual boot laptop with Win7 and Win8. I want to move the Win8 system to another machine. The question is, after I uninstall Win8, do I need to do anything to eliminate the initial dual boot screen?

• Moved by Rob Caplan [MSFT]Microsoft employee 6 hours 41 minutes ago

Just follow this steps:

1. Login to your Windows 7 OS
2. Go to "Run" and enter "msconfig"
3. This will open the "System Configuration" window in the screen
4. Go to the tab that says "Boot"
5. Select your "Windows 7" label under this tab
6. Click "Set as default", if the button is enabled
7. Select your "Windows 8" label under the same tab
8. Click "Delete"
9. Click "OK" and restart your system for changes to take effect
10. This will now boot directly to Windows 7
11. You can now delete the Windows 8 folders or format that drive

Caution: do on your own risk. only do this if you are an advance user.

Thank you very much for the detailed instructions.

What procedure should I follow to officially uninstall Win8.1 off the laptop and reinstall in another machine? 

You needn't to uninstall the Win8 operating system.

If the disk partition the Win8 occupies only contains the content of the operating system, after making backup for data stored in system folder(s), usually C:\Users\%user_name%\My Documents\%app_name%, you may simply format the whole partition.

If the Win8 operating system shares the same parititon with other data files, you may boot up into the Win7 operating system, then only delete the files belonging to the win8 operating system. The deletion may need Administrator permission and to change files/folders security settings.

• Edited by kwikc 7 hours 30 minutes ago