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<h3><a name="main">Boot Loader Help</a></h3> |
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Welcome to <em>SUSE LINUX 9.1</em><br><br> |
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Use this menu to select the desired function. If you have |
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problems navigating in this help system, press |
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<em>F1</em> to enter the <a href="#help">description</a> of the help |
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system. The main functions in this menu are:<br><br> |
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<a href="#harddisk">Boot from Hard Disk</a>: This selection will not do |
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anything to the system. It only starts a previously installed |
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operating system.<br><br> |
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<a href="#linux">Installation</a>: |
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This installation mode works on most machines. If you experience a |
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system freeze during boot or problems with detection of your hardware |
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components, such as disk controllers or network cards, try one of the |
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following installation options. <br><br> |
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<a href="#noacpi">Installation -- ACPI Disabled</a>: Many of the |
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currently-sold computers have incomplete or faulty ACPI |
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implementations. This selection disables ACPI support in the |
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kernel, but still enables many performance features, like DMA for IDE |
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hard disks. <br><br> |
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<a href="#failsafe">Installation -- Safe Settings</a>: If you were not |
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successful with <em>Installation</em>, this selection might |
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solve the issue.<br><br> |
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<a href="#manual">Manual Installation</a>: This item is intended for |
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experts. Use this |
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option to have the most possible control. Also use it to load extra modules, |
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for example, before starting the Rescue |
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System.<br><br> |
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<a href="#rescue">Rescue System</a>: This boot image starts a small |
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Linux system in RAM. This is useful if the system does not start properly. |
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After booting this system, log in as root. <br><br> |
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<a href="#memtest">Memory Test</a>: Memory testing is useful for more than |
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checking installation of new memory modules. It is a stress test |
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for a big part of your computer system and may indicate hardware |
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problems. <br><br> |
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<a href="#opt">Boot Options</a>: The boot options may change the |
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behavior of your system completely. They are settings for |
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the kernel.<br><br> |
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<a href="#help">F1 Help</a>: This is context sensitive. It will |
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show different screens depending on the active element of the |
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boot screen. There is also a description of this help system |
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available.<br><br> |
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<a href="#videomode">F2 Video Mode</a>: Here, choose between |
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different screen resolutions while installing. If you encounter |
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problems with the graphical installation, the <em>text mode</em> may |
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be a work-around for you.<br><br> |
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<a href="#install_src">F3 Installation Source</a>: Choose the |
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installation source.<br><br> |
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<a href="#keytable">F4 Language</a>: Set language and keyboard mapping |
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used by the boot loader.<br><br> |
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<a href="#startup">F5 Kernel Startup</a>: Normally, you won't see |
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any kernel messages. Use <em>F5</em> to change that.<br><br> |
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<a href="#driverupdate">F6 Driver Update</a>: For very new machines, a |
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driver update may be needed to install the system.<br><br> |
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<hr> |
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<h3><a name="help">Using the Help System</a></h3> |
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The boot loader online help is context sensitive. It gives information |
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about the selected menu item or, if you are editing boot options, |
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it tries to look up information about the option in which the cursor is |
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positioned.<br> |
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<br> |
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Navigation Keys<br><br> |
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<em>Up Arrow</em>: highlight previous link<br> |
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<em>Down Arrow</em>: highlight next link<br> |
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<em>Left Arrow</em>, <em>Backspace</em>: return to previous topic<br> |
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<em>Right Arrow</em>, <em>Enter</em>, <em>Space</em>: follow link<br> |
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<em>Page Up</em>: scroll up one page<br> |
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<em>Page Down</em>: scroll down one page<br> |
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<em>Home</em>: go to page start<br> |
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<em>End</em>: go to page end<br> |
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<em>Esc</em>: leave help<br> |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="driverupdate">Driver Update</a></h3> |
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If you need a driver update floppy or CD-ROM, press <em>F6</em>. The |
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boot loader asks you to insert the driver update medium after |
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loading the Linux kernel.<br><br> |
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A driver update is typically a floppy with new versions of hardware |
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drivers or bug fixes needed during installation. |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="videomode">Video Mode Selection</a></h3> |
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Press <em>F2</em> to get the list of video modes your graphics card |
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supports. The highest mode your monitor can display is preselected.<br><br> |
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It is possible that your monitor cannot be detected automatically. In that |
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case, select your preferred mode manually.<br><br> |
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If your system has problems with the graphics card during the |
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installation, the <em>text mode</em> may be a usable work-around. |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="startup">Splash Mode Selection</a></h3> |
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<em>F5</em> lets you change the splash screen mode. You can |
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use the <a href="#o_splash">splash</a> kernel option directly, if you prefer.<br> |
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<br> |
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<em>native</em> turns the splash screen off (same as splash=0)<br> |
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<br> |
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<em>verbose</em> shows nice picture and kernel and boot messages<br> |
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<em>silent</em> suppresses all kernel and boot messages and shows a progress |
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bar instead<br> |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="keytable">Language and Keyboard Layout Selection</a></h3> |
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Press <em>F4</em> to change language and keyboard layout the boot loader uses. |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="install_src">Installation Source</a></h3> |
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Press <em>F3</em> to choose an installation source.<br><br> |
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This is the same as using the <a href="#o_install">install</a> |
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boot option. |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="linux">Installation</a></h3> |
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Select <em>Installation</em> to start the default installation. The |
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<a href="#opt">boot options</a> entered are used in the |
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start-up. This item activates many features of commonly available |
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hardware. <br><br> |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="harddisk">Boot from Hard Disk</a></h3> |
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Select <em>Boot Installed OS</em> to start the system installed on |
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your local hard disk. This system must be installed properly, because |
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only the MBR (Master Boot Record) on the first hard disk is started. |
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The device ID of the first hard disk is provided by the BIOS of |
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the computer. <br><br> |
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Use this if you forgot to remove the CD or DVD from your |
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drive and want to start the computer from the hard disk.<br><br> |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="noacpi">Installation -- ACPI Disabled</a></h3> |
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In SuSE Linux, the ACPI support of the developer kernel 2.5 is already |
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available for the stable 2.4 kernel. Very new hardware sometimes |
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requires ACPI to control the interrupt handling. ACPI completely |
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replaces the old APM system. <br><br> |
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Select <em>Installation -- ACPI Disabled</em> if you encounter |
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problems during boot of the kernel. Known problems with machines that |
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have problems with ACPI are: |
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* kernel freezes when booting<br> |
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* PCI Cards are not detected or initialized properly<br><br> |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="failsafe">Installation -- Safe Settings</a></h3> |
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Select <em>Installation -- Safe Settings</em> if you encounter hangs |
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while installing or irreproducible errors. This option disables DMA |
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for IDE drives and all power management features. |
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See also the kernel options for <a href="#o_apm">apm</a>, |
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<a href="#o_acpi">acpi</a> and <a href="#o_ide">ide</a>. |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="manual">Manual Installation</a></h3> |
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<em>Manual Installation</em> enables the professional to tune several |
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installation parameters before installing a system or booting the |
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<a href="#rescue">Rescue System</a>. This is intended for expert use |
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only. |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="rescue">Rescue System</a></h3> |
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The <em>Rescue System</em> is a small RAM disk base system. From there, |
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it is possible to make all kinds of changes to an installed system. Because |
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only low-level tools are available in this system, it is intended for |
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experts.<br><br> |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="memtest">Memory Test</a></h3> |
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The included <em>Memory Test</em> provides good possibilities to |
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stress test the hardware of a system. Its main purpose is to detect |
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broken RAM, but it also stresses many other parts of the system. <br> |
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There is no guarantee that the memory is good if no errors are |
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found, although most of memory defects will be found.<br> |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="opt">Boot Options</a></h3> |
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There are two types of boot options available. First, there are |
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options that affect the installer. Second, there are kernel |
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options. Some of the more common options are: <br><br> |
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a) installer options<br> |
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<br> |
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<a href="#o_install">install</a> -- select an installation source<br> |
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<a href="#network">network options</a> -- the network options<br> |
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<a href="#o_vnc">vnc options</a> -- options for installation via VNC |
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<br><br> |
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b) kernel options<br> |
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<br> |
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<a href="#o_splash">splash</a> -- influence the behavior of the splash screen<br> |
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<a href="#o_apm">apm</a> -- toggle power management<br> |
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<a href="#o_acpi">acpi</a> -- advanced configuration and power interface<br> |
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<a href="#o_ide">ide</a> -- control the IDE subsystem<br> |
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<br><br>Return to <a href="#main">Start Page</a> |
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<hr> |
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<h3><a name="o_install">Installer Options: install</a></h3> |
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By default, the local CD-ROMs are searched for the installation source. |
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For a network install, select the |
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<em>install</em> option. Possible installation protocols are<br> |
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* FTP<br> |
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* NFS<br> |
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* HTTP<br> |
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The syntax to use is just like standard URLs. For example, |
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if your server is found at 192.168.0.1 and you want to do an NFS-based |
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install from the directory /install on this server, specify |
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the source as follows:<br><br> |
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<em>install=nfs://192.168.0.1/install</em><br><br> |
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The network card will either be configured with <em>dhcp</em> or you |
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must specify the parameters yourself as described in the |
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<a href="#network">network options</a>.<br> |
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<br><br>Return to <a href="#opt">Boot Options</a> |
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<hr> |
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<h3><a name="o_splash">Kernel Options: splash</a></h3> |
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The splash screen is the picture shown during system start-up.<br> |
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<br> |
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<em>splash=0</em><br><br> The splash screen is switched off. This may be useful |
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with very old monitors or if some error occurs.<br> |
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<br> |
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<em>splash=verbose</em><br><br> Activates splash, kernel and boot messages are |
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still shown.<br> |
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<br> |
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<em>splash=silent</em><br><br> |
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Activates splash, but no messages. Instead a progress bar is drawn.<br> |
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<br> |
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Return to <a href="#opt">Boot Options</a> |
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<hr> |
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<h3><a name="network">Installer Options: Network Options</a></h3> |
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It is possible to configure the network interface right now. The |
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hardware will be detected later by YaST2. The minimum set of options |
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to configure your network card consists of host IP and netmask. For |
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example:<br><br> |
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<em>hostip=192.168.0.10 netmask=255.255.255.0</em><br> |
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<br> |
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or in a shorter form:<br><br> |
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<em>hostip=192.168.0.10/24</em><br> |
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<br> |
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If you specified a <a href="#o_install">network-based install</a> and do |
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not specify both of these options, the installer tries to configure |
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the network interface with <em>dhcp</em>. If you need a default |
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gateway, specify this with the option <em>gateway</em>. For |
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example:<br><br> |
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<em>gateway=192.168.0.8</em><br> |
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<br><br>Return to <a href="#opt">Boot Options</a> |
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<hr> |
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<h3><a name="o_vnc">Installer Options: vnc</a></h3> |
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To enable the VNC installation, specify the |
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parameters vnc and vncpassword:<br><br> |
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<em>vnc=1 vncpassword=example</em><br><br> |
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The VNC server will be started and you may control YaST2 over any VNC |
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client from a remote system.<br> |
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<br><br>Return to <a href="#opt">Boot Options</a>. |
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<hr> |
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<h3><a name="o_apm">Kernel Options: apm</a></h3> |
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APM is one of the two power management strategies used on current |
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computers. It is mainly used with laptops for functions like suspend |
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to disk, but it may also be responsible for switching off the |
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computer after power down. APM relies on a correct working BIOS. If |
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the BIOS is broken, APM may have only limited use or even prevent the |
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computer from working. Therefore, it may be switched off with the |
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parameter<br><br> |
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<em>apm=off</em> -- switch off APM completely<br><br> |
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Some very new computers may take more advantage from the newer |
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<a href="#o_acpi">ACPI</a>. |
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<br><br>Return to <a href="#opt">Boot Options</a> |
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<hr> |
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<h3><a name="o_acpi">Kernel Options: acpi</a></h3> |
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ACPI (Advanced Configuration and Power Interface) is a |
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standard that defines power and configuration management interfaces |
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between an operating system and the BIOS. By default, <em>acpi</em> is |
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switched on when a BIOS is detected that is newer than from year |
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2000. There are several commonly |
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used parameters to control the behavior of ACPI:<br> |
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<br> |
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<em>pci=noacpi</em> -- do not use ACPI to route PCI interrupts |
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<em>acpi=oldboot</em> -- only the parts of ACPI that are relevant |
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for booting remain activated<br> |
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<em>acpi=off</em> -- switch off ACPI completely<br> |
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<em>acpi=force</em> -- switch on ACPI even if your BIOS is dated |
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before 2000<br> |
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<br> |
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Especially on new computers, it replaces the old |
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<a href="#o_apm">apm</a> system. |
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<br><br>Return to <a href="#opt">Boot Options</a> |
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<hr> |
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<h3><a name="o_ide">Kernel Options: ide</a></h3> |
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IDE is, unlike SCSI, commonly used in most desktop workstations. |
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To circumvent some hardware problems that occur with IDE systems, use the |
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kernel parameter: <br><br> |
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|
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<em>ide=nodma</em> -- switch off DMA for IDE drives<br> |
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<br><br>Return to <a href="#opt">Boot Options</a>. |
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</body></html> |
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