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用電腦一段時間的人,都知道備份的重要性。macOS 內建的時光機功能大概是對 Mac 使用者來說最方便的工具之一,既不用額外..." />
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<h1 id="macOS_Time_Machine_時光機首次備份加速法">
macOS_Time_Machine_時光機首次備份加速法
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<p> 如何解除 Time Machine 時光機備份時的限速封印</p>
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<p>用電腦一段時間的人,都知道備份的重要性。<br><br>macOS 內建的時光機功能大概是對 Mac 使用者來說最方便的工具之一,既不用額外付費,<br><br>而且備份於無形,出問題或是重新安裝 macOS 時復原的相容性也高。<br><br>最近購入一顆 1TB 的外接硬碟,<br><br>大約 1TB 的首次備份竟然整整花了 48 小時都無法完成!<br><br>上網找了資訊,原因是 macOS 的時光機備份設有限流,<br><br>避免備份時影響到正在執行的工作,但是首次備時就悲劇了。<br><br>解除方式也很簡單,確定程式都關掉,時光機也沒啟動後,打開終端機程式,並輸入下面指令後按 Enter:</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo sysctl debug.lowpri_throttle_enabled=0</span><br></pre></td></tr></table></figure>
<p>這時你會發現時光機的備份速度變快很多,等首次備份完畢後,<br><br>重新開機或是再執行下面指令,即可恢復原先有限流的狀態:<br></p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo sysctl debug.lowpri_throttle_enabled=1</span><br></pre></td></tr></table></figure>
<p>參考資訊:<a target="_blank" rel="noopener" href="https://www.imore.com/how-speed-your-time-machine-backups">How to speed up your Time Machine backups</a></p>
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