diff --git a/README.md b/README.md
index af9d121..4e9b863 100755
--- a/README.md
+++ b/README.md
@@ -34,3 +34,5 @@
 ## [在ThinkServerRD450服务器上安装6.0.42.41系统](thinkserverrd450/thinkserverrd450.md)
 
 ## [搭建多路径存储服务器](storage-server-targetcli.md)
+
+## [内核升级操作](upgrade_kernel.md)
diff --git a/upgrade_kernel.md b/upgrade_kernel.md
new file mode 100644
index 0000000..951abe7
--- /dev/null
+++ b/upgrade_kernel.md
@@ -0,0 +1,133 @@
+# 内核升级 #
+
+以下操作均在root下进行
+
+## 准备 ##
+
+需升级镜像：rocky4.2.32-sqlproxy-2017-06-09.iso
+
+最新镜像：rocky6.0.42.41-x86_64-security-20170815.iso
+
+工具：xorriso
+
+脚本文件：mk_iso_4.2.sh
+
+## 涉及到修改的目录及文件 ##
+
+### 光盘环境中的文件： ###
+
+镜像中/boot/isolinux目录下的initrd.img和vmlinuzI两个文件
+
+镜像中/lib/modules目录
+
+### 将要安装系统的文件： ###
+
+镜像中/Rocky/kernels目录下的所有同名文件
+
+镜像中/Rocky/modules目录
+
+## 升级内核 ##
+
+### 光盘下升级 ###
+
+1.在/mnt创建两个目录old和new
+
+```
+mkdir -p /mnt/{old,new}
+```
+
+2.挂载需修改的镜像到old下，挂载最新镜像到new下。
+
+```
+mount -o loop rocky4.2.32-sqlproxy-2017-06-09.iso /mnt/old
+
+mount -o loop rocky6.0.42.41-x86_64-security-20170815.iso /mnt/new
+```
+
+3.在/opt下创建一个目录image
+
+```
+mkdir -p /opt/image
+```
+
+4.将旧的镜像中的所有文件拷贝出来
+
+```
+cp -R /mnt/old/. /opt/image/
+```
+
+5.将新镜像中的initrd.img和vmlinuzI拷贝到/opt/image/boot/isolinux中
+
+```
+cp /mnt/new/boot/isolinux/initrd.img /opt/image/boot/isolinux/
+
+cp /mnt/new/boot/isolinux/vmlinuzI /opt/image/boot/isolinux/
+```
+
+6.升级驱动
+
+```
+cd /opt/image/lib/modules
+
+rm -r 2.6.32.41-Rocky4.2-x86_64
+
+cp -R /mnt/new/lib/modules/2.6.32.41-Rocky4.2-x86_64 /opt/image/lib/modules/
+```
+
+### 将要安装系统的升级 ###
+
+1.升级内核
+
+从rocky6.0.42.41-x86_64-security-20170815系统上获取最新内核（将和要升级镜像中相同的文件拷贝过去）  
+
+config-2.6.32.41-Rocky4.2-x86_64  
+
+initrd.img-2.6.32.41-Rocky4.2-x86_64  
+
+kernel_src_info  
+
+System.map-2.6.32.41-Rocky4.2-x86_64  
+
+vmlinuz-2.6.32.41-Rocky4.2-x86_64
+
+```
+cp config-2.6.32.41-Rocky4.2-x86_64 initrd.img-2.6.32.41-Rocky4.2-x86_64 System.map-2.6.32.41-Rocky4.2-x86_64 vmlinuz-2.6.32.41-Rocky4.2-x86_64 kernel_src_info /opt/image/Rocky/kernels/
+```
+
+2.升级驱动
+
+```
+cd /opt/image/Rocky/modules/
+
+rm -r 2.6.32.41-Rocky4.2-x86_64/
+
+cp -R 2.6.32.41-Rocky4.2-x86_64/ /opt/image/Rocky/modules/
+
+cd 2.6.32.41-Rocky4.2-x86_64
+```
+
+删除无用的两个链接文件
+
+```
+rm build source
+```
+
+### 修改版本 ###
+
+```
+vi /opt/image/tag
+
+vi /opt/image/etc/issue
+
+vi /opt/image/usr/lib/setup/issue
+```
+
+## 生成镜像文件 ##
+
+```
+./mk_iso_4.2.sh /opt/image/ rocky4.2.32-sqlproxy-2017-08-28.iso
+```
+
+/opt/image/       需要生成镜像的文件目录
+
+rocky4.2.32-sqlproxy-2017-08-28.iso     生成的iso文件名称