Linux command
pivot_root 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Example
sudo pivot_root [/new_root] [/new_root/old_root]
Example
pivot_root -h
说明
pivot_root changes the root filesystem to a new directory and moves the current root to a subdirectory of the new root. This is commonly used during system boot in initramfs to switch from the initial RAM filesystem to the real root filesystem. The operation is atomic and affects the entire system. After pivot_root, the old root remains accessible at the specified put_old location until it's unmounted.
参数
- new_root
- Directory that becomes the new root filesystem
- put_old
- Directory under new_root where old root will be mounted
- -h, --help
- Display help information
FAQ
What is the pivot_root command used for?
pivot_root changes the root filesystem to a new directory and moves the current root to a subdirectory of the new root. This is commonly used during system boot in initramfs to switch from the initial RAM filesystem to the real root filesystem. The operation is atomic and affects the entire system. After pivot_root, the old root remains accessible at the specified put_old location until it's unmounted.
How do I run a basic pivot_root example?
Run `sudo pivot_root [/new_root] [/new_root/old_root]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does new_root do in pivot_root?
Directory that becomes the new root filesystem