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I've been playing with Ubuntu the past few weeks via WUBI and finally decided to give it its own space in my HDD through dual booting via separate partitions.

After installation, the system could not detect Ubuntu, even after explicitly adding Grub2 via EasyBCD.

Desperate for answers, I Googled and came across this:

and also another post

And right now, my computer won't boot up anymore, it just says Operating System not Found.

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as an update, i tried ubuntu 32 bit and works fine. but now it wont detect my USB broadband stick .. :( – noboot Aug 28 '12 at 2:05

Just try this and it will probably work:

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Linked answer are generally not allowed here. Best to copy the essentials here, in case the site is down. – blade19899 Feb 14 '14 at 21:43
While this may theoretically answer the question, it would be preferred that you post the key points of a link here. – Thomas Ward Feb 15 '14 at 0:33

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