Windows 系统磁盘占用率 100% 问题全面解决方案
<p style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);">在使用 Windows 系统的过程中，许多用户会遇到磁盘占用率长期保持 100% 的情况，表现为系统卡顿、程序响应缓慢、文件读写延迟等问题。这种现象在 Win8/8.1、Win10、Win11 系统中均较为常见，其成因与系统服务、设置及第三方应用密切相关。本文将系统梳理问题原因并提供针对性解决方案。</p><h3 id="top_2" class="header-vfC6AV auto-hide-last-sibling-br" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);">一、磁盘占用率 100% 常见原因分析</h3><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);">磁盘占用率过高并非单一因素导致，而是多类系统机制与应用行为共同作用的结果，主要包括以下几类：</div><ol class="auto-hide-last-sibling-br" style="margin: 0px; padding: 0px; list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">系统服务持续运行</strong>：家庭组相关服务（HomeGroup Listener、HomeGroup Provider）、Superfetch（Win10/11 中名为 SysMain）、Windows Search 等服务会频繁读写磁盘，尤其在低配电脑上易引发高占用。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">安全软件扫描</strong>：Windows Defender 的自动计划扫描或实时防护会大量占用磁盘资源，尤其在系统刚启动或文件操作频繁时。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">虚拟内存配置不当</strong>：虚拟内存频繁在硬盘上交换数据，若设置不合理（如过小或自动管理模式），会加剧磁盘读写压力。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">快速启动机制</strong>：Win8 及以上系统的 “快速启动” 功能通过保存内核镜像到磁盘实现快速启动，但可能导致磁盘长期处于高负载状态。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">系统与应用更新</strong>：Windows 应用商店自动更新、系统补丁下载或第三方软件后台更新（如浏览器、播放器）会占用大量磁盘 I/O。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">协议与功能冗余</strong>：IPv6 协议在未使用场景下仍会后台活动，增加磁盘隐性负载。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">第三方进程异常</strong>：部分应用（如下载工具、媒体播放器、安全软件）后台扫描文件或异常运行时，会持续占用磁盘资源。</li></ol><h3 id="top_8" class="header-vfC6AV auto-hide-last-sibling-br" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);">二、分系统解决方案</h3><h4 id="top_10" class="header-vfC6AV auto-hide-last-sibling-br" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; font-size: 14px; background-color: rgb(255, 255, 255);">（一）通用基础排查步骤（适用于所有系统）</h4><ol class="auto-hide-last-sibling-br" style="margin: 0px; padding: 0px; list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">定位高占用进程</strong><br class="container-utlnW2 wrapper-d0Cc1k undefined" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">按下<span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Ctrl+Shift+Esc</code></span>打开任务管理器，切换至 “进程” 选项卡，点击 “磁盘” 列排序，查看占用率较高的进程名称（如<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Service Host: Unistack Service Group</code>、<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">System</code>、第三方应用进程等）。若为第三方应用（如下载工具、视频软件），可右键选择 “结束任务” 临时释放资源。</span></div></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">关闭家庭组服务</strong><br class="container-utlnW2 wrapper-d0Cc1k undefined" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">家庭组服务是磁盘高占用的常见诱因，非局域网共享场景可直接禁用：</div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">按下<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Win+R</code>，输入<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">services.msc</code>打开 “服务” 窗口。<br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><img src="https://chinakb.lenovo.com.cn/chinakb/prod-api/file/downloadFile?key=uniko/IMAGE/aea2db9fc1e1ce031223e37608adb284-1753351492512.png&name=mceclip0.png" width="400" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"><br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"></span></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">找到<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">HomeGroup Listener</code>和<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">HomeGroup Provider</code>两个服务，分别双击打开属性窗口。<br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><img src="https://chinakb.lenovo.com.cn/ueditor/php/upload/image/20160119/1453193560414382.jpg" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"></span></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">将 “启动类型” 改为 “禁用”，点击 “停止” 服务，再点击 “确定” 保存设置。<br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"></span><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;"><img src="https://chinakb.lenovo.com.cn/ueditor/php/upload/image/20160119/1453193560522794.jpg" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"></span></li></ul></li></ol><h4 id="top_14" class="header-vfC6AV auto-hide-last-sibling-br" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; font-size: 14px; background-color: rgb(255, 255, 255);">（二）Win8/8.1 系统专属优化</h4><ol class="auto-hide-last-sibling-br" style="margin: 0px; padding: 0px; list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">调整 Superfetch 服务</strong><br class="container-utlnW2 wrapper-d0Cc1k undefined" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Superfetch 的预缓存机制可能导致磁盘频繁读写，可根据需求禁用：</div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">打开 “服务” 窗口，<span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">找到<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Superfetch</code>服</span>务，双击打开属性。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">启动类型改为 “禁用”，点击 “停止” 后确定。</li></ul></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">关闭快速启动</strong></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">打开控制面板，进入 “硬件和声音→电源选项→选择电源按钮的功能”。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">点击 “更改当前不可用的设置”，取消勾选 “启用快速启动（推荐）”，点击 “保存更改”。</li></ul></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">优化虚拟内存</strong></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">右键 “计算机” 选择 “属性→高级系统设置→性能→设置→高级→虚拟内存→更改”。<br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><img src="https://chinakb.lenovo.com.cn/ueditor/php/upload/image/20160119/1453193561286341.jpg" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"><br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><img src="https://chinakb.lenovo.com.cn/ueditor/php/upload/image/20160119/1453193561389991.jpg" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"><br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><img src="https://chinakb.lenovo.com.cn/chinakb/prod-api/file/downloadFile?key=uniko/IMAGE/b52b94a4f5c2a1bf84754b453b8105b1-1753351806225.jpg&name=imagetools0.jpg" width="441" height="593" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">取消 “自动管理所有驱动器的分页文件大小”，选择 “无分页文件”（仅推荐 8GB 以上内存用户），或设置 “自定义大小”（初始值 = 物理内存大小，最大值 = 物理内存 2 倍），点击 “设置→确定”。<br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><img src="https://chinakb.lenovo.com.cn/chinakb/prod-api/file/downloadFile?key=uniko/IMAGE/3fdfb0a828f1e4285566199f4969aeec-1753351833783.jpg&name=imagetools1.jpg" width="409" height="596" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"></li></ul></li></ol><h4 id="top_18" class="header-vfC6AV auto-hide-last-sibling-br" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; font-size: 14px; background-color: rgb(255, 255, 255);">（三）Win10 系统专属优化</h4><ol class="auto-hide-last-sibling-br" style="margin: 0px; padding: 0px; list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">关闭应用商店自动更新</strong></span><br class="container-utlnW2 wrapper-d0Cc1k undefined" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">应用商店后台更新易引发磁盘占用飙升：</span></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">打开 Microsoft Store，点击右上角 “三个点→设置”。</span></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">关闭 “应用自动更新” 开关。</span></li></ul></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">管理 Windows Search 服务</strong></span><br class="container-utlnW2 wrapper-d0Cc1k undefined" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">索引服务频繁扫描文件时可临时禁用：</span></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">打开 “服务” 窗口，找到<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Windows Search</code>服务，双击设置 “启动类型” 为 “禁用”，停止服务后确定。<span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(186, 55, 42);">（注：禁用后无法通过系统搜索查找文件，需谨慎操作）</span></span></li></ul></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">调整 Windows Defender 扫描</strong></span></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">打开控制面板→“Windows Defender→设置”，取消 “实施保护” 和 “启用 Windows Defender” 勾选。</span></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">进入 “服务” 窗口，禁用<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Windows Defender Service</code>服务。<span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(186, 55, 42);">（注：建议搭配第三方安全软件使用</span>）</span></li></ul></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">关闭 IPv6 协议</strong></span></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">打开 “网络和共享中心→更改适配器设置”，右键当前网络连接（如以太网、Wi-Fi）选择 “属性”。</span></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">取消勾选 “Internet 协议版本 6（TCP/IPv6）”，点击 “确定”。</span></li></ul></li></ol><h4 id="top_22" class="header-vfC6AV auto-hide-last-sibling-br" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; font-size: 14px; background-color: rgb(255, 255, 255);">（四）Win11 系统专属优化</h4><ol class="auto-hide-last-sibling-br" style="margin: 0px; padding: 0px; list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">禁用 SysMain 服务（原 Superfetch）</strong></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">打开 “服务” 窗口，找到<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">SysMain</code>服务，双击设置 “启动类型” 为 “禁用”，停止服务后确定。<br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><img src="https://chinakb.lenovo.com.cn/chinakb/prod-api/file/downloadFile?key=uniko/IMAGE/53936c061567639b63665a6e7bbd38a3-1753351993141.png&name=mceclip1.png" width="700" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"><br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"></span></li></ul></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">处理 Unistack 服务组异常</strong></span><br class="container-utlnW2 wrapper-d0Cc1k undefined" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">若<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Service Host: Unistack Service Group</code>频繁占用磁盘，可通过注册表优化：</span></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">按下<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Win+R</code>输入<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">regedit</code>打开注册表编辑器，定位至<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services</code>。</span></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">依次找到<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">OneSyncSvc</code>、<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">OneSyncSvc_Session1</code>、<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">UserDataSvc</code>、<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">UserDataSvc_Session1</code>四项，双击右侧 “Start” 值，将数值数据改为 “4”（禁用），重启电脑生</span>效。<span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(186, 55, 42);">（注：修改注册表有移动风险）</span></li></ul></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">关闭快速启动</strong></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">打开 “设置→系统→电源和睡眠→其他电源设置”，点击 “选择电源按钮的功能”。<br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><img src="https://chinakb.lenovo.com.cn/chinakb/prod-api/file/downloadFile?key=uniko/IMAGE/ff5bef22f8bac3ceac565bb8c77c92f0-1753352383959.png&name=mceclip2.png" width="600" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">点击 “更改当前不可用的设置”，取消 “启用快速启动” 勾选，保存设置。<br style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><img src="https://chinakb.lenovo.com.cn/chinakb/prod-api/file/downloadFile?key=uniko/IMAGE/2c5083c42cba03b747b2904f5375acc6-1753352406831.png&name=mceclip3.png" width="600" style="cursor: pointer; border: 0px; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; max-width: 100%; height: auto !important;"></li></ul></li></ol><h3 id="top_26" class="header-vfC6AV auto-hide-last-sibling-br" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);">三、进阶优化方案</h3><ol class="auto-hide-last-sibling-br" style="margin: 0px; padding: 0px; list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">清理系统冗余文件</strong></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">右键系统盘（通常为 C 盘）选择 “属性→磁盘清理”，勾选 “以前的 Windows 安装”“临时文件” 等选项，点击 “确定” 清理。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">若磁盘空间不足（建议保留 10% 以上空闲空间），可手动删除大文件或使用磁盘清理工具扩展空间。</li></ul></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">优化虚拟内存（高内存用户适用）</strong><br class="container-utlnW2 wrapper-d0Cc1k undefined" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">物理内存≥8GB 的用户可降低虚拟内存负载：</div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">进入 “系统属性→高级→性能→设置→高级→虚拟内存→更改”。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">取消 “自动管理”，选择 “无分页文件”（需重启生效），或设置为 “自定义大小”（初始值 = 1024MB，最大值 = 2048MB）。</li></ul></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">通过组策略限制 Windows Defender 扫描</strong><br class="container-utlnW2 wrapper-d0Cc1k undefined" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">专业版系统可通过组策略调整扫描频率：</span></div><ul class="auto-hide-last-sibling-br" style="list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">按下<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">Win+R</code>输入<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">gpedit.msc</code>打开组策略编辑器，定位至<code style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">计算机配置→管理模板→Windows组件→Windows Defender防病毒程序→扫描</code>。</span></li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">双击 “指定每周的不同天运行计划扫描”，设置为 “已启用”，选择非使用高峰时段（如每周日凌晨），减少日常干扰。</span></li></ul></li></ol><h3 id="top_30" class="header-vfC6AV auto-hide-last-sibling-br" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);"><span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; font-size: 16px;">四、注意事项</span></h3><ol class="auto-hide-last-sibling-br" style="margin: 0px; padding: 0px; list-style: none; outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);"><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">操作前建议<span style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(186, 55, 42);"><strong style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">备份重要数据</strong></span>，修改注册表或服务设置后若出现异常，可恢复默认值。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">虚拟内存、快速启动等功能禁用后可能影响部分场景体验（如大型软件运行、启动速度），建议根据实际使用需求调整。</li><li style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent;">若上述方法无效，需排查硬件问题（如硬盘坏道），可通过联想电脑管家的 “硬件检测” 功能或联系售后检测硬盘健康状态。</li></ol><p style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);"> </p><div class="auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space" style="outline: 0px; text-size-adjust: none; -webkit-tap-highlight-color: transparent; color: rgb(52, 52, 52); font-family: "Microsoft YaHei", Arial, sans-serif, 宋体; background-color: rgb(255, 255, 255);">通过以上步骤，可有效降低 Windows 系统磁盘占用率，恢复系统流畅运行。</div> SF页:
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