Tech-Today
Finally after trying out several configurations that didn't work I am now able to successfully boot a Windows 7 and Ubuntu 12.04 OS on a Lenove G480 laptop.
First here's what didn't work:
1.) easyBCD doesn't work, Windows 7 will just boot as default.
->http://thpc.info/dual/win7/dualboot_win7+ubuntu1204_bcd_on_win7.html
2.) The process wherein you need to copy linux configuration on c: drive of Windows and edit boot.init.
What worked for me:
1.) Install Windows 7.
I have 500 GB (sda) and I divided it into 4 partitions:
sda1->Reserved partition
sda2->NTFS, Windows 7 partition
sda3->ext4, Linux partition
sda4->NTFS, Another logical extension for back up files
2.) Install Ubuntu 12.04.
->Follow the link in what didn't worked #1.
Things you should take note, I install Ubuntu in my ext4 partition and the boot loader in the main drive: sda without any number.
3.) Now when you reboot your computer you will notice that grub2 loader from Ubuntu is not loading. Why? Because Windows 7 has overriden it and we have to reconfigure it in the main hard drive for it to work again.
3.1) You need to create a bootable Ubuntu CD or in my case a bootable USB drive:
->http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/
3.2) Setup your BIOS to boot from USB or normally you can press F12 to select the drive to boot.
3.3) Once booted in USB, click try Ubuntu (without installing, because we already did earlier).
3.4) Execute the following commands in terminal:
If you want to know more about grub2 loader, look at this link: http://sourceforge.net/apps/mediawiki/bootinfoscript/index.php?title=Boot_Problems:Cannot_Find_A_Device_For_boot/grub
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Tech-Today
How to dual boot Windows 7 and Ubuntu 12.04 on Lenovo G480
Finally after trying out several configurations that didn't work I am now able to successfully boot a Windows 7 and Ubuntu 12.04 OS on a Lenove G480 laptop.
First here's what didn't work:
1.) easyBCD doesn't work, Windows 7 will just boot as default.
->http://thpc.info/dual/win7/dualboot_win7+ubuntu1204_bcd_on_win7.html
2.) The process wherein you need to copy linux configuration on c: drive of Windows and edit boot.init.
What worked for me:
1.) Install Windows 7.
I have 500 GB (sda) and I divided it into 4 partitions:
sda1->Reserved partition
sda2->NTFS, Windows 7 partition
sda3->ext4, Linux partition
sda4->NTFS, Another logical extension for back up files
2.) Install Ubuntu 12.04.
->Follow the link in what didn't worked #1.
Things you should take note, I install Ubuntu in my ext4 partition and the boot loader in the main drive: sda without any number.
3.) Now when you reboot your computer you will notice that grub2 loader from Ubuntu is not loading. Why? Because Windows 7 has overriden it and we have to reconfigure it in the main hard drive for it to work again.
3.1) You need to create a bootable Ubuntu CD or in my case a bootable USB drive:
->http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/
3.2) Setup your BIOS to boot from USB or normally you can press F12 to select the drive to boot.
3.3) Once booted in USB, click try Ubuntu (without installing, because we already did earlier).
3.4) Execute the following commands in terminal:
//update Ubuntu
>sudo apt-get update
//list the partitions that we have, as I stated earlier I have an ext4 file system in sda3
>sudo fdisk -l
//create a folder where we can mount the sda3 drive
>sudo mkdir /media/boot
//mount the drive
>sudo mount /dev/sda3 /media/boot
//install grub (note without 3 suffix in sda)
//just disregard the error message and take note of --force option (we need this)
>sudo grub-install --root-directory=/mnt/boot /dev/sda --force
//update
>sudo update-grub
If you want to know more about grub2 loader, look at this link: http://sourceforge.net/apps/mediawiki/bootinfoscript/index.php?title=Boot_Problems:Cannot_Find_A_Device_For_boot/grub
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