The 1st thing to know is the computer use: - how many programs will be installed - how may data will be on your computer The system partition is done by default during installing. You have only to decide for primary and extended partition. The extended partition is an optional for data, but is not very important to set for the installation. Remember that you may add some hard disk on a computer. A modern motherboard supports 6 SATA units and 2 IDE units (hard disks or DVD). If you have not enogh space, you may add another hard disk. This addition hard disk works as an extended partition. The benefit of ad extended partition is to have 2 logical units on 1 physic unit. This is less expansive in money. But about data loss is better to have 2 hard disks, on for system and one for data. In case of fault you may recover better than having only 1 hard disk. Please tell me if this explanation is enough for you. <div class="gmail_quote"> 2011/2/13 Jorge Gusmao <<a href="mailto:jorge.m.gusmao@gmail.com">jorge.m.gusmao@gmail.com</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Hi there, Can someone please explain the basics of disk partition necessary for a ubuntu installation? What is the best way to do it and witch kind of partitions (primary, extended, system...) are necessary? Thanks <div style="padding: 0px; margin-left: 0px; margin-top: 0px; overflow: hidden; word-wrap: break-word; color: black; font-size: 10px; text-align: left; line-height: 130%;"> </div> -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </blockquote></div>