<p>Les options du chargeur de démarrage d’Haiku peuvent vous aider lorsque vous rencontrez des problèmes matériels ou lorsque vous voulez choisir quelle installation d’Haiku démarrer, si vous en avez plusieurs (par exemple sur un CD d'installation ou sur une clef USB). C'est aussi pratique si vous avez installé un composant logiciel qui vous empêche de démarrer votre ordinateur : voir <ahref="#troubleshooting">Dépannage</a> ci-dessous.</p>
<p>Pour accéder aux options du chargeur de démarrage, vous devez garder la touche <spanclass="key">Maj</span> appuyé jusqu'à l'amorce du processus de démarrage d'Haiku.
Si un gestionnaire d'amorce est installé, vous pouvez commencer à presser la touche <spanclass="key">Maj</span> avant d'invoquer le démarrage d'Haiku.
Si Haiku est le seul système d'exploitation de votre machine, Vous pouvez commencer à presser la touche même si le BIOS n'a pas fini d'afficher ses messages de démarrage.</p>
<tr><td><b>Select safe mode options</b></td><td></td><td>Il y a plusieurs options à essayer en cas de problème lié au matériel, ou si le système devient instable ou incapable de démarrer à cause d'un mauvais pilote. Lorsque vous déplacez la barre de sélection d'une option, une brève explication s'affiche en bas de l'écran.</td></tr>
Puts the system into safe mode. This can be enabled independently from the other options.</p>
<p><spanclass="menu">Disable user add-ons</span><br/>
Prevents all user installed add-ons from being loaded. Only the add-ons in the system directory will be used. See <ahref="#troubleshooting">Troubleshooting</a> below.</p>
<p><spanclass="menu">Disable IDE DMA</span><br/>
Disables IDE DMA, increasing IDE compatibility at the expense of performance.</p>
Allows to select system files that shall be ignored. Useful e.g. to disable drivers temporarily. See <ahref="#troubleshooting">Troubleshooting</a> below.</p></td></tr>
<tr><td><b>Select debug options</b></td><td></td><td>Here you'll find several options that help with debugging or getting details for a <ahref="../../welcome/en/bugreports.html">bug report</a>. Again, a short explanation for each option is displayed at the bottom.</td></tr>
Allows advanced debugging options to be entered directly.</p></td></tr>
<tr><td></td><td></td><td>If <spanclass="menu">Enable debug syslog</span> is activated, a warm reboot after a crash shows these additional options:</td></tr>
<p>If Haiku refuses to boot on your hardware from the get-go, try out setting different options under <spanclass="menu">Select safe mode options</span>. Consider filing a <ahref="../../welcome/en/bugreports.html">bug report</a> in any case.</p>
<p>On the other hand, if Haiku only suddenly acts up after you have installed some software, especially hardware drivers, you have several options to get Haiku bootable again so you can uninstall the offending package:</p>
<li><p>Activating <spanclass="menu">Safe mode</span> will prevent most servers, daemons and the UserBootscript from being started.</p></li>
<li><p>Activating <spanclass="menu">Disable user add-ons</span> will prevent using any add-ons (drivers, translators, etc.) you have installed in the user hierarchy under your Home folder.</p></li>
<li><p>If the offending driver, add-on etc. is installed in the system hierarchy, things get a bit more complicated, because that area is read-only. Here, the <spanclass="menu">Blacklist entries</span> comes into play. With it, you can navigate through the whole system hierarchy and disable the component that's messing things up for you by checking an entry with the <spanclass="key">SPACE</span> or <spanclass="key">RETURN</span> key. <spanclass="key">ESC</span> returns you up one level to the parent directory.</p>
<p>Online, there's the article <ahref="http://www.haiku-os.org/blog/barrett/2013-12-15_how_permanently_blacklist_package_file">How to Permanently Blacklist a Package File</a> showing how to make that setting stick.</p></li>
<li><p>Under <spanclass="menu">Select boot volume</span> you can specify what former "version" of Haiku to boot. Every time you un/install a package, the old state is saved and you can boot into it by choosing it from the list presented in the boot loader options.<br/>
So, if you encounter boot problems after installing some package, boot a Haiku state from before that time and uninstall the offending package.</p></li>
