diff --git a/Software/Development/OperatingSystem/Linux/User/Linux_常用目录_文件集合.md b/Software/Development/OperatingSystem/Linux/User/Linux_常用目录_文件集合.md
index f63c518..ac73f88 100644
--- a/Software/Development/OperatingSystem/Linux/User/Linux_常用目录_文件集合.md
+++ b/Software/Development/OperatingSystem/Linux/User/Linux_常用目录_文件集合.md
@@ -8,6 +8,8 @@
 | /sys/class/drm/card\<n\>-\<Type\>-\<n\>/modes  | 显示设备所支持的显示模式 |
 | /sys/class/drm/card\<n\>-\<Type\>-\<n\>/edid   | 如果包含 EDID，此节点为映射的 EDID 文件|
 | /sys/firmware                                  | Device Tree 目录展开 |
+| /sys/class/block                               | Block 子系统参数等 |
+| /sys/class/drm                                 | DRM 子系统参数等 |
 | /usr/lib/systemd/system                        | Systemd unit files |
 | /usr/share/applications                        | Desktop Entry 文件 (*.desktop) |
 | /usr/share/icons                               | 图标文件 |