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\documentclass{article}
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\usepackage{longtable}
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\usepackage[pdftex]{graphicx}
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\usepackage{hyperref}
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\hypersetup{pdfauthor={CentOS Documentation SIG},%
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pdftitle={Grand Unified Bootloader (GRUB)},%
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pdfsubject={CentOS Corporate Visual Identity}%
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}
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\title{Grand Unified Bootloader (GRUB)}
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\author{CentOS Documentation SIG}
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\begin{document}
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\maketitle
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\begin{abstract}
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This article describes GRUB Visual Style for CentOS Distribution.
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This screen is where the selection of which kernel to run and other
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boot-time options, are made. It is seen every time the computer boots.
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Copyright \copyright\ 2010\ The CentOS Project. Permission is
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granted to copy, distribute and/or modify this document under the
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terms of the GNU Free Documentation License, Version 1.2 or any later
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version published by the Free Software Foundation; with no Invariant
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Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the
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license is included in the section entitled ``GNU Free Documentation
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License''.
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\end{abstract}
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\tableofcontents
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\section{Workplace}
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\begin{itemize}
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\item SVN:trunk/Identity/Themes/\$THEME/Distro/BootUp/GRUB/
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\item SVN:trunk/Translations/Identity/Themes/Distro/BootUp/GRUB/
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\item SVN:trunk/Scripts/Identity/Themes/Distro/BootUp/GRUB/
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\end{itemize}
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\section{Theme}
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\input{table-theme.tex}
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\section{Design}
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Initially, \emph{splash.xpm.gz} is a PNG image (splash.png) which is
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converted to xpm.gz. \emph{splash.png} image is rendered for each
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major release of CentOS distribution. Each image is based in the same
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Artistic Motif and has the following components:
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\begin{enumerate}
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\item The CentOS Release Brand.
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\item The CentOS Default Artistic Motif.
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\end{enumerate}
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Image rendering is done using the rendering script (\emph{render.sh})
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available in the workplace of this section. This script creates
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the appropriate PNG images under \emph{img/\$VERSION/}
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directory.
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After image rendering, each \emph{img/\$VERSION/splash.png} image
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should be indexed to 14 colors. This can be done using an image
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manipulation tool like GIMP, or ImageMagick. This color reduction
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could bring some noise to your design. If that is the case, you need
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to retouch your design in a 14 colors basis.
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The final step is to convert the 14 colors indexed \emph{splash.png}
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image into \emph{splash.xpm.gz}. To do so, use the command
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\emph{convert2xpm.sh} provided in the workplace. This command
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explores the \emph{img/\$VERSION/} directories and
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converts\footnote{\emph{convert splash.png splash.xpm \&\& gzip
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splash.xpm}} each \emph{splash.png} image indexed to 14 colors to its
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\emph{.xpm.gz} equivalent. The converted images are saved under
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\emph{xpm/\$VERSION/} directories.
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\section{Configuration}
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\section{Rendering}
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\section{Testing}
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\section{Issues}
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The following issues were seen on a video card \emph{Trident
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Microsysmtes CyberBlade/i1 (cyblafb)}:
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\begin{description}
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\item[Different colors]: As more different colors you have on your
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design, more are the possibilities of increasing the amount of noise
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in your design after indexing to 14 colors. For example, if you
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include the actual CentOS symbol in this image, it ocupies 3 colors
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(for the orange, green, violet) which are completely different and
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non-reusable in the blue toned background image.
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\item [CentOS Symbol]: If the CentOS symbol is included in
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this image, colors used in the symbol after indexing the image
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are not the defaults colors defined as CentOS Symbol Colors.
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To workaround this, in first place, I used a variant of CentOS symbol
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without background colors, just the white borders. Later, I desided to
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remove it completely because that symbol could confuse people about
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which is the CentOS default symbol (see ``The CentOS Brand'' manual).
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Finally, I ended up using just the plain word CentOS to brand the
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GRUB.
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\end{description}
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% License section
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\input{../../../../../Licenses/GFDL.tex}
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\end{document}
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