Ubuntu 12.0.4 amd64 boot screen won't appear

Asked by Majid Navabi

Hi. I have Win 7 on my computer, then installed Ubuntu 12.04 from dvd. During installation I selected manual partitioning, then created a primary partition beside my Win 7 partition and installed Ubuntu on it. Everything went on normally with no error and Ubuntu installed successfully. The problem is that when installation completed and I rebooted, there is no screen which I can select Ubuntu, only my Win 7 starts automatically, as if I have never installed Ubuntu. Please help me with this. Thanks a lot.

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Ubuntu grub2 Edit question
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Majid Navabi
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actionparsnip (andrew-woodhead666) said :
#1

What video chip do you use?
Does the system have a make and model?

Thanks

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Majid Navabi (majidnavabi) said :
#2

motherboard: ECS G31T-M7
Video: Nvidia Geforce GTS250

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actionparsnip (andrew-woodhead666) said :
#3

Try the boot option:

nouveau.blacklist=1

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Majid Navabi (majidnavabi) said :
#4

Could you please tell me how I should do this? When I start my PC, it goes straight to Windows. There is no option to select Ubuntu. Do you mean I should boot my PC with Ubuntu disk and type this in terminal?

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actionparsnip (andrew-woodhead666) said :
#5

Hold SHIFT at boot, does Grub show up?

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Majid Navabi (majidnavabi) said :
#6

Grub won't show up. It's like Grub has not been installed at all.

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actionparsnip (andrew-woodhead666) said :
#7

http://www.omgubuntu.co.uk/2011/09/live-usb-sticking-grub-2-video

Assuming you did not use grub, that will work.

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Majid Navabi (majidnavabi) said :
#8

well, I should certainly add this info, I have 2 HDD on my system, when I booted from hdd1 Ubuntu boot appeared, while I have installed Ubuntu on my hdd0, I assume grub has been installed on hhd1 instead of hdd0. anyway my problem has been solved. Thanks a lot "andrew-woodhead".