I am trying to install Ubuntu 12.04 onto my computer from a USB flash drive. I set up the flash drive as a starup disk using Startup Disk Creator. I inserted it into a USB slot and started the computer.
The computer runs Ubuntu 12.04 from the flash drive, but when I try to install Ubuntu onto the computer I get an alert box saying: "No root file system. No root file system is defined. Please correct this from the partitioning menu." Unfortunately I do not know how to do this. I'm using an HP Compaq Convertible minitower with an Intel Core 2 processor running at 2.4 GHz with 1 GB of RAM. I do not have any other operating system installed on the computer.
Any help would be most appreciated.