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When I press the F2 key I can enter into BIOS before I change it's OS (Windows 7) to Ubuntu OS in my Samsung 530U3C ultrabook, but now I can't, It direct to Ubuntu OS.

Can anybody help me ? please!

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I don't think the BIOS gives you the options which OS to boot, but allows you which device to boot instead. – Peachy Aug 25 '12 at 13:24

closed as off topic by Uri Herrera, izx, con-f-use, Stephen Myall, htorque Aug 25 '12 at 20:30

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2 Answers

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As soon as you power on your pc start tapping the keys untill you enter BIOS, for example:

Power on pc, start tapping F2 until you enter BIOS

If that doesn't work, try the same procedure but with F1, then ESC, F12.

You should really look into your PC manual to see what is the key for entering BIOS, for some computers it can be F2, for others ESC, etc.

But if you're not sure, just try the method i told you

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I'm trying this, but it not working. When I power on my pc, its appear left bottom corner show press f2 entry bios or press f4 to recover system but its break, because I reinstall. – Marc L. Aug 25 '12 at 11:12
Not sure what you mean, but if you power on the pc and hit F2 many times quickly it should enter in BIOS. By the way you want to enter BIOS for what? – LnxSlck Aug 25 '12 at 11:24
I want to re-install Ubuntu OS. I tried these keys, but its not working. – Marc L. Aug 25 '12 at 11:33
You don't have to enter BIOS to reinstall Ubuntu, simply boot your pc from a cd/dvd drive or usb drive and reinstall Ubuntu. – LnxSlck Aug 25 '12 at 11:44
That's good. Thx @LnxSlck – Marc L. Aug 25 '12 at 11:50
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The key doesn't depend on the OS you have installed, I think. Maybe you pressed F2 at the wrong point of time.

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But how do I resolve it. – Marc L. Aug 25 '12 at 11:21

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