This guide is for Mac OSX users and will walk you through flashing your SD Card with Ubuntu MATE ready to run on your Raspberry Pi.
Linux/Windows users please refer to the guides on https://ubuntu-mate.org/raspberry-pi/
Download Ubuntu MATE
Download the Ubuntu MATE for Raspberry Pi image from https://ubuntu-mate.org/download/
Then unzip the downloaded image
Format your microSDHC card
Insert your SDHC card
Open Disk Utility
Select the SD card and then click Erase and choose MS-DOS (FAT) format.
Now open a terminal and type the following to locate the cards disk ID
diskutil list
Now Unmount the disk. Replace disk1 with your SD card ID
diskutil unmountDisk /dev/disk1
Write image to disk
Warning: The dd application should be used with great care as you risk erasing disks unintentionally if used incorrectly.
Browse to directory containing image.
Run the following command ensuring to replace disk1 with your SD card
cd ~/Downloads
sudo dd if=ubuntu-mate-16.04.2-desktop-armhf-raspberry-pi.img of=/dev/disk1 bs=2m
This process will take a while to complete and may appear frozen. It took around 30 mins for us.
Result: