With the first partition created, select the free space, then click the “Add…” button to create the next partition. You will need to repeat this step to create the remaining partitions.
The next partition we need to create will be for swap. The recommended size for swap space is double the amount of memory that you have. For this example, I’m allocating 6000 MB, or 6 GB. For “Use as,” select “swap area.” OK.
A default installation of Linux Mint 9 or Ubuntu 10.04 takes up less than 4 GB of disk space. So anything more than 4 GB will do just fine for the main partition. Make the right selection for the file system and mount point (ext4 and /), then click “Forward.”
Since this is the last partition I want to create, I’m going to allocate the remaining disk space to it. Again, for “Use as,” select “Ext4 journaling file system.” For “Mount Point,” select /home from the drop down menu. Forward.
This is a view of all the partitions you just created. If you need to make any changes, select the desired partition, then click the “Change…” button. Otherwise, that’s the end of the manual partitioning guide. Click the “Forward” button to continue with the rest of the installation.