(adsbygoogle = window.adsbygoogle || []).push({}); If you ever dual booted your machine and ended up deleting a partition were a OS was installed it will still show when you boot your computer up.
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1. Click the window orb on the bottom left
2. Type in cmd on the search field
3. Right click on cmd and run as administrator (click yes when it pops up)
4. Type 'bcdedit' without quote
5. A list of OS installed on your machine will show up
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6. Look for the OS you want to remove from the start up menu
7. Copy the identifier # including the curly brackets
ex: {6376dd85-4dbf-11e0-a382-9a939d6de433}
8. Then type 'bcdedit /delete identifier #'
9. A message should come up saying you successfully deleted your partition
10. Restart computer and the OS would be removed from the start-up menu