How Do I Remove Operating System from Boot Windows 7?

Why does my computer show two operating systems at startup?

Upon booting up, Windows may offer you multiple operating systems from which to choose. This may occur because you previously used multiple operating systems or because of a mistake during an operating system upgrade.

How do I remove Windows 7 Boot manager?

Stop ‘Windows Boot Manager’ options in Windows 7.

1. Click Start.
2. In the Search text box, type msconfig.
3. Launch msconfig by selecting it from the search results above the search text box.
4. Go to the Boot tab.
5. Select the boot entry you want to delete.
6. Click the Delete button and then click OK.