注意,卸载分区会格式化分区内所有的数据,请谨慎操作或进行数据备份
# df -hT
![2743275-d7fb0c77ed1e94d0.png](https://upload-images.jianshu.io/upload_images/2743275-d7fb0c77ed1e94d0.png)
image.png
准备卸载/dev/sda6这个分区
# umount /data2
重新检查一下
# df -hT
![2743275-2af8caea924f6612.png](https://upload-images.jianshu.io/upload_images/2743275-2af8caea924f6612.png)
image.png
# fdisk -l
发现待分区的磁盘 /dev/sda
![2743275-c079a22b84557f0e.png](https://upload-images.jianshu.io/upload_images/2743275-c079a22b84557f0e.png)
image.png
对该磁盘进行卸载分区,输入m并回车
# fdisk /dev/sda
# m 输入帮助
# p 打印分区表
![2743275-85bcd2afce1808d7.png](https://upload-images.jianshu.io/upload_images/2743275-85bcd2afce1808d7.png)
image.png
![2743275-95439e347a38fcf6.png](https://upload-images.jianshu.io/upload_images/2743275-95439e347a38fcf6.png)
image.png
卸载/dev/sda6分区
此时注意/dev/sda6是刚刚卸载了/data2的分区名
![2743275-d7fb0c77ed1e94d0.png](https://upload-images.jianshu.io/upload_images/2743275-d7fb0c77ed1e94d0.png)
image.png
# d 删除一个分区
# 6 删除第六个分区
![2743275-b7cbc678d5616a01.png](https://upload-images.jianshu.io/upload_images/2743275-b7cbc678d5616a01.png)
image.png
重新打印分区表发现已卸载/dev/sda6分区
# p
![2743275-8969029b19517563.png](https://upload-images.jianshu.io/upload_images/2743275-8969029b19517563.png)
image.png
# w 将表写入磁盘并退出
再检查一遍
# fdisk /dev/sda
# p 打印分区表
![2743275-fc6779f38f7ccb43.png](https://upload-images.jianshu.io/upload_images/2743275-fc6779f38f7ccb43.png)
image.png
![2743275-40d4fd8413ae4065.png](https://upload-images.jianshu.io/upload_images/2743275-40d4fd8413ae4065.png)
image.png