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I am facing some problems after installing Ubuntu.

My computer wants to reboot after installing Ubuntu, but after I restart it, Windows 8 boots automatically. I cannot find any boot option to select operating system, it just boots my Windows 8. I cannot see the drive where I have installed Ubuntu.

How can I fix this?

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marked as duplicate by Eric Carvalho, Kevin Bowen, Eliah Kagan, Seth, Basharat Sialvi Apr 3 '13 at 9:08

This question was marked as an exact duplicate of an existing question.

How did you install Ubuntu, and what version? Was it by disc, or Wubi.exe? – Frederik Popp Mar 27 '13 at 11:04
Also mention if you are trying to install Ubuntu on a laptop which came pre-installed with Windows 8. If so, look at the following question, follow the answers given there and if you still face issues then edit your question with details: Installing Ubuntu on a Pre-Installed UEFI Supported Windows 8 system – Aditya Mar 27 '13 at 17:59

If you installed in using wubi, you should get a menu (f8 if it dosen't pop up), if you did a dual boot install, hold she shift key right after turning it on.

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