linux 报错：Permission denied——如何切换到 root 身份

最新推荐文章于 2025-06-16 15:22:07 发布

Robin_Pi

最新推荐文章于 2025-06-16 15:22:07 发布

阅读量1w

点赞数 4

CC 4.0 BY-SA版权

分类专栏： Linux/Mac

本文链接：https://blog.youkuaiyun.com/Robin_Pi/article/details/109378900

在Linux环境中，非root用户执行`fdisk -l`会遇到权限问题。解决方法是切换到root权限，如使用`sudo su`。成功切换后，可以查看所有磁盘信息，包括新添加的硬盘。对于新硬盘的分区，需要进一步进行分区操作，如创建主分区或逻辑分区，并格式化为合适的文件系统。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

文章目录

1. 问题：在一般用户身份下使用`fdisk -l`遭到拒绝：`Permission denied`
2. 解决：切换到 root 身份
3. 接下来的问题：如何给新添加的硬盘重新分区

1. 问题：在一般用户身份下使用`fdisk -l`遭到拒绝：`Permission denied`

suer@suer-virtual-machine:~$ fdisk -l
fdisk: cannot open /dev/ram0: Permission denied
fdisk: cannot open /dev/ram1: Permission denied
fdisk: cannot open /dev/ram2: Permission denied
fdisk: cannot open /dev/ram3: Permission denied
fdisk: cannot open /dev/ram4: Permission denied
fdisk: cannot open /dev/ram5: Permission denied
fdisk: cannot open /dev/ram6: Permission denied
fdisk: cannot open /dev/ram7: Permission denied
fdisk: cannot open /dev/ram8: Permission denied
fdisk: cannot open /dev/ram9: Permission denied
fdisk: cannot open /dev/ram10: Permission denied
fdisk: cannot open /dev/ram11: Permission denied
fdisk: cannot open /dev/ram12: Permission denied
fdisk: cannot open /dev/ram13: Permission denied
fdisk: cannot open /dev/ram14: Permission denied
fdisk: cannot open /dev/ram15: Permission denied
fdisk: cannot open /dev/fd0: Permission denied
fdisk: cannot open /dev/sda: Permission denied
fdisk: cannot open /dev/sdb: Permission denied