INSTALL UBUNTU-raspberry

http://xubi.me/blog/how-to-2/post/rpi-part-1-how-to-install-images-on-rpi-9 

Following previous post : Introduce Raspberry Pi, today I will show you: How to install images on RPi.

Download the Ubuntu Core image into your folder from this link

Once the download is finished, you’ll have a zip file named ubuntu-15.04-snappy-armhf-raspi2.img.xz

Extract the downloaded zip file into your Downloads folder (you might have to install archive extractor software, like 7-zip or similar as the standard tools do not support xz) you will now have a file called ubuntu-15.04-snappy-armhf-rpi2.img .

Insert the MicroSD Card on your computer, you can use an external card reader or the SD slot if your computer has one.

Download and install Win32DiskImager.

Launch the Win32DiskImager application.

Find out where what drive your SD card is mounted to. Open a File Explorer window to check which drive your SD card is listed under.

Here is an example of a card listed under E: and the setup in Disk Imager.

Win32DiskImager will need 2 elements:

An Image File which is the file you want to copy on your SD Card. Navigate to your Downloads folder and select the ubuntu-15.04-snappy-armhf-rpi2.img image you have just extracted.

A Device which is the location of your SD card. Select the Drive in which your SD card is mounted.

To be safe, unplug every External USB Drive you may have connected to your PC.

When ready click on Write and wait for the process to complete.

Exit from Win32DiskImager and eject the SD card from the File Explorer window.

Eject the SD card physically from your PC and Insert the SD card in your Raspberry Pi.

Log in to Ubuntu Core

Power on your Raspberry Pi  and wait 1-2 minutes for the OS to complete its first boot. You can then access your snappy Ubuntu Core system either directly with a keyboard and display connected, or with an SSH client (such as PuTTY):

$ ssh ubuntu@webdm.local

The default username and password are ubuntu.

It's time to to explore your new system.