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I am facing a problem. After installing Ubuntu 12.04 LTS using Live CD, at the reboot there is no boot option to choose the OS. I directly get logged into my Windows 7.

Before that i was having an issue with the 'nomodeset' if not mistaken .After ticking [x] on the nomodeset, i can install my Ubuntu, but got stucked again at choosing the partition option.

So i did 2 partitions for Ubuntu, 1 partition as ext3 for / and the other 1 for swap. Which enabled to proceed until the finished installation dialogue, and after that system wants to reboot .It takes some time and gets stuck at the screen doing nothing, doesn't reboot at all.

I did forced shutdown then rebooted again which directly logs me in windows 7 without boot option. In win7 the partitions for Ubuntu is gone.

I tried the boot-repair thing and it doesn't help .It just shows up the _ Blank Cursor (terminal thing i guess). I typed boot repair but still the same result.

I am using Acer Aspire 4736z.

Please somebody help me with this issue.

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I apologize but I am having a hard time understanding what you are trying to do. Do you want to creat a dual boot installation where after starting your PC you get a list A=Ubuntu and B=Windows7 or are you trying to do something else? –  Yosi Jun 23 '12 at 9:00
    
did you followed the steps mentioned here ? help.ubuntu.com/community/Boot-Repair .. if so and its not working, post the url of boot summery (see here for instruction ubuntuforums.org/showthread.php?t=1821980) –  Web-E Jun 23 '12 at 9:25
    
yup. i try to make dual boot. and 1 partition for each os. –  utamaku Jun 23 '12 at 9:34
    
yes. i type the sudo thing. and it said no kernel found. sumting like tat. –  utamaku Jun 23 '12 at 9:35
    
for my win7 i had the part already. the new one i did was for ubuntu and its swap. –  utamaku Jun 23 '12 at 9:43
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2 Answers

Try following this tutorial and let me know if that works or not.

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Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. –  Eliah Kagan Jun 24 '12 at 1:28
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while you come to partition screen go to last choice something else and next screen you have to make two partitions / and swap.while making / partition select ext4 file system ,format partition and install.down u have boot loader partition selection .Put it to first partition sda1.when re booting you get grub menu .

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my partition sda1 is for win7. i had done like u said before. by doing the two partition but i choose ext3. and for the boat loader i put the partition for ubuntu. is that right? –  utamaku Jun 23 '12 at 9:38
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