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130 lines
4.5 KiB
130 lines
4.5 KiB
<html>
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<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
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<body>
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<!-- help=boot -->
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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>Return to <a href="#opt">Boot Options</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>F2</em> to change language and keyboard layout the boot loader uses.
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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="profile">Choose Profile</a></h3>
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Press <em>F3</em> to select a profile. Your system will be started using the
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configuration saved in this profile.
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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="opt">Boot Options</a></h3>
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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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<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>
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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> 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>
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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="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 benefit more 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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<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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