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Diffstat (limited to 'man/bootup.html')
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1 files changed, 6 insertions, 6 deletions
diff --git a/man/bootup.html b/man/bootup.html index 45667ca1ef..69215a8037 100644 --- a/man/bootup.html +++ b/man/bootup.html @@ -18,8 +18,8 @@ </style><a href="index.html">Index </a>· <a href="systemd.directives.html">Directives </a>· <a href="../python-systemd/index.html">Python </a>· - <a href="../libudev/index.html">libudev </a>· - <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 220</span><hr><div class="refentry"><a name="bootup"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>bootup — System bootup process</p></div><div class="refsect1"><a name="idm140640993133776"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p>A number of different components are involved in the system + + <span style="float:right">systemd 221</span><hr><div class="refentry"><a name="bootup"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>bootup — System bootup process</p></div><div class="refsect1"><a name="idm47365628124416"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p>A number of different components are involved in the system boot. Immediately after power-up, the system BIOS will do minimal hardware initialization, and hand control over to a boot loader stored on a persistent storage device. This boot loader will then @@ -40,7 +40,7 @@ unmounts/detaches the root file system and the storage it resides on. As a last step, the system is powered down.</p><p>Additional information about the system boot process may be found in - <a href="http://man7.org/linux/man-pages/man7/boot.7.html"><span class="citerefentry"><span class="refentrytitle">boot</span>(7)</span></a>.</p></div><div class="refsect1"><a name="idm140640996958240"></a><h2 id="System Manager Bootup">System Manager Bootup<a class="headerlink" title="Permalink to this headline" href="#System%20Manager%20Bootup">¶</a></h2><p>At boot, the system manager on the OS image is responsible + <a href="http://man7.org/linux/man-pages/man7/boot.7.html"><span class="citerefentry"><span class="refentrytitle">boot</span>(7)</span></a>.</p></div><div class="refsect1"><a name="idm47365623214304"></a><h2 id="System Manager Bootup">System Manager Bootup<a class="headerlink" title="Permalink to this headline" href="#System%20Manager%20Bootup">¶</a></h2><p>At boot, the system manager on the OS image is responsible for initializing the required file systems, services and drivers that are necessary for operation of the system. On <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a> @@ -114,7 +114,7 @@ </p><p><code class="filename">timers.target</code> is pulled-in by <code class="filename">basic.target</code> asynchronously. This allows timers units to depend on services which become only available - later in boot.</p></div><div class="refsect1"><a name="idm140640992322144"></a><h2 id="Bootup in the Initial RAM Disk (initrd)">Bootup in the Initial RAM Disk (initrd)<a class="headerlink" title="Permalink to this headline" href="#Bootup%20in%20the%20Initial%20RAM%20Disk%20(initrd)">¶</a></h2><p>The initial RAM disk implementation (initrd) can be set up + later in boot.</p></div><div class="refsect1"><a name="idm47365623197104"></a><h2 id="Bootup in the Initial RAM Disk (initrd)">Bootup in the Initial RAM Disk (initrd)<a class="headerlink" title="Permalink to this headline" href="#Bootup%20in%20the%20Initial%20RAM%20Disk%20(initrd)">¶</a></h2><p>The initial RAM disk implementation (initrd) can be set up using systemd as well. In this case, boot up inside the initrd follows the following structure.</p><p>The default target in the initrd is <code class="filename">initrd.target</code>. The bootup process begins @@ -186,7 +186,7 @@ initrd-switch-root.service | v - Transition to Host OS</pre></div><div class="refsect1"><a name="idm140640992304400"></a><h2 id="System Manager Shutdown">System Manager Shutdown<a class="headerlink" title="Permalink to this headline" href="#System%20Manager%20Shutdown">¶</a></h2><p>System shutdown with systemd also consists of various target + Transition to Host OS</pre></div><div class="refsect1"><a name="idm47365623179456"></a><h2 id="System Manager Shutdown">System Manager Shutdown<a class="headerlink" title="Permalink to this headline" href="#System%20Manager%20Shutdown">¶</a></h2><p>System shutdown with systemd also consists of various target units with some minimal ordering structure applied:</p><pre class="programlisting"> (conflicts with (conflicts with all system all file system services) mounts, swaps, @@ -213,7 +213,7 @@ systemd-reboot.service systemd-poweroff.service systemd-halt.service syste | | | | v v v v <span class="emphasis"><em>reboot.target</em></span> <span class="emphasis"><em>poweroff.target</em></span> <span class="emphasis"><em>halt.target</em></span> <span class="emphasis"><em>kexec.target</em></span></pre><p>Commonly used system shutdown targets are - <span class="emphasis"><em>emphasized</em></span>.</p></div><div class="refsect1"><a name="idm140640992298608"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p> + <span class="emphasis"><em>emphasized</em></span>.</p></div><div class="refsect1"><a name="idm47365623173664"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p> <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>, <a href="http://man7.org/linux/man-pages/man7/boot.7.html"><span class="citerefentry"><span class="refentrytitle">boot</span>(7)</span></a>, <a href="systemd.special.html"><span class="citerefentry"><span class="refentrytitle">systemd.special</span>(7)</span></a>, |