Installing Ubuntu and dual-boot instructions:
Put the disc in your computer before your system boots up and click on “start or install Ubuntu“. It will take a few minutes for Ubuntu to load since you are running it off of the CD. No changes are being made to your hard drive at that time. Once the desktop loads click on the “Install” icon. Then follow the seven steps shown. Important: If you want to have both Windows and Linux, you need to be using XP or Vista. Windows 2000 and older does not support dual booting, unless you do not want Windows at all, in which case this would not matter. And remember to back up all of your important data.
Step 1 is just setting the language.
Step 2 is setting the time zone.
Step 3 is setting up the keyboard.
Step 4 is partitioning the hard drive. These are the instructions for doing this manually.
Shrink the drive with your other OS(the largest partition) and shrink it by however big you want your Linux and swap partition to be. The swap partition should be 2.5 times as big as the amount of RAM you have. If you are only messing around with Linux and are not serious, make the partition you are installing Linux on no more than 10GB(not less than 5GB).
Create the partition on which you will install Linux. Leave enough space for the Linux swap partition.
Make sure “/” is your mount point after you create the new installation partition.
Create the Linux swap partition. Just double click on the device called “free space” and where it says “ext3” change it to “linux-swap“. You did leave enough space for it right?
Step 5 is importing an account from your current installation.
Step 6 is creating an account to login when you restart your new installation of Linux. Do not lose your password.
Step 7 is showing what your installation will look like and ask you whether you are sure you want to do this.
The “Advanced” tab is an option not to install the GRUB boot loader and participate in the package usage survey. Make sure you let it install, if you are using Windows anyway. The MBR that comes with Windows cannot boot Linux, so let it install. So if you chose not to install it, you could only load Windows. And the GRUB can load Windows, which lets you easily dual boot. To boot up Windows, make sure you watch you computer as it loads when you start it, and the GRUB boot loader menu will show an option to load both Linux and Windows.
Tutorial: Installing Ubuntu Linux on a Mac using Parallels
Restoring the GRUB boot loader
If you needed to install Windows after you installed Linux, then you must restore the GRUB boot loader if you wish to continue using Linux. Here are the steps
1. Boot off of your Linux Live CD.
2.Open up the terminal.
3.Then run the command sudo grub.
4. Next, run the command find /boot/grub/stage1.
5. The command root (hd0,1) comes next.
6. Now run the command setup (hd0).
7. The final command is just quit.
After doing this you should be able to boot both Windows and Linux. When you restart the computer make sure you look for the boot screen that gives you the option of choosing what OS to use.