StartUp Manager, or SUM, is a gui tool for changing settings in Grub, Grub2 and Usplash. SUM should work with recent versions of Debian and Debian-based distributions such as Ubuntu.

GNU Graphics Grub is the new Grub boot screen which adds to Visual appeal of Boot Screen .. Unlike older grub GFX Grub has now much better themes and customization options.. So lets take a quick look at How To Install GFX GrubBoot Menu..

If you've been running Linux long enough to have upgraded your system more than once, you probably have several Linux kernels lurking around your system. If you discover that a certain application no longer works for you, you can go back to a previous kernel to try to run your program. GRUB, the boot loader found in most Linux distributions, lets you choose among operating systems and kernels installed on your box. Many people, however, fear that messing with GRUB may ruin their system, because of its many esoteric options, and configuration file text that often contains no help comments. QGRUBEditor can help you view and edit the GRUB boot loader from a graphical user interface.

Linux users can boast long times between reboots, but even so, the startup screens will grace your display at some time. Here’s just what your computer is doing during this process, the several important steps that occur and the order they take place, and how you can take control.

When you power on your computer, the first software that runs is a bootloader that invokes the computer's operating system. GRUB, the GRand Unified Bootloader, is an integral part of many Linux systems. It starts the Linux kernel. Here's some background on GRUB, and some tips on installing and configuring the software.