Dual boot Ubuntu 12.04/Windows 7

Question

I have an Ubuntu 12.04 / Windows 7 dual boot. After installing Ubuntu my computer reboots straight to Windows. There is no option to boot Ubuntu.

Specs:

• OS: Windows 7 Home Premium
• CPU: Intel i5 2500k
• mobo: ASUS P8Z68-V Pro
• GPU: GeForce GTX 570
• SSD: Corsair 120GB (Windows 7)
• HDD: WD 1TB

I select the USB drive in the BIOS and boot to it and choose install. I select to manually configure partitions, partition the 200 GB of unallocated space on my 1 TB HDD into 16 GB swap file, 30 GB / ext4, and 154 GB /home ext4.

I made sure that the bootloader is installed on the Corsair 120GB SSD (where the Windows boot is) and the installation goes smoothly.

When I reboot after the install it runs through the BIOS straight into Windows. I have tried upwards of a dozen times and I have also tried with Linux Mint. I have also redownloaded the ISO and used two different programs to create the live USB.

The installation seems to have gone well, as after the installation I can see the partitions I have created in Windows Device Manager.

I currently run Lubuntu on my laptop, but it is not a dual boot. I'm assuming this is a bootloader issue and I am assuming that inside those partitioned files in my screenshot there is a working Ubuntu 12.04. I just have no way of getting to it.

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Update: (copied from comment)

I booted using my Ubuntu live USB and used the Boot-Repair tool suggested in virpara's answer.

Upon opening the tool I saw that it was recognizing my SSD as a removable drive and defaulting to install on the HDD. Once I realized that I was able to force install onto the SSD. My computer can now boot Ubuntu.

Solution

you should re-install grub. check my answer here. It is done through GUI tool.

By the way I don't like to give link to answer but it doesn't worth just copy and paste it again and again.

Comments

[Uzair]

Yes they do and it looks much better, Thanks :)

[Uzair]

yes i did see that but how do i reinstall grub from linux if i cannot boot to the linux i installed? if i reinstall from a live USB will it have the same effect?

[23 93 26 35 19 57 3 89]

Yes it will - though I do not like that tool - it has caused some people issues. I used the information here - help.ubuntu.com/community/Grub2/…

[Rahul Virpara]

@Alkatraz boot into live cd and follow steps.

[Rahul Virpara]

@Elfy that page is really fantastic. I often check it but recommend use of GUI tools for new user.

[23 93 26 35 19 57 3 89]

So do I if I know there's no problems - obviously ymmv:) When I was a new user I used to fix things that way - no GUI.

[Rahul Virpara]

it will work only if grub2 is installed on sdaX rather than sda and if OP wants to use windows boot loader.

[Uzair]

UPDATE: i booted to live usb and used the tool virpara suggested, upon opening the too i saw that it was recognizing my SSD as a removeable drive and defaulting to install on the HDD. once i realized that i was able to force install on the SDD and now i am posting this from my freshly installed Ubuntu 12.04 Thanks for all of the help you guys rock!

[Rahul Virpara]

@Alkatraz I'm glad it helped you.