The design of U Disk autorun based on Linux

Creating the U Disk´s startup disk based on Linux is practical for the system maintenance and the development personnel. People only need to carry a USB device and then will be able to have an operating system that belongs to them anytime and anywhere. This paper focuses on the design of U Disk autorun based on Linux. It includes four functional modules of grub, kernel, initrd and rootfs, their function characteristic, the interrelated relates, and methods of each module´s design. Also it simply introduces the processing of debugging errors. The designed U Disk can load Linux installation files, add the skipping procedure into the grub startup guide module and make the U Disk´s boot disk jump to the start guide files of the installation program. It will finish the operating system´s installment function.