Centos系统U盘安装时报错“/dev/root does not exist”

报错内容

Warning: /dev/root does not exist
Generating "/run/initramfs/rdsosreport.txt"

Entering emergency mode. Exit the shell to continue.
Type "journalctl" to view system logs.
You might want to save "/run/initramfs/rdsosreport.txt" to a USB stick or /boot after mounting them and attach it to a bug report.

解决办法

1.查看U盘所在路径

执行命令，查看U盘设备文件路径

ls /dev
# 或
lsblk

如下图，U盘安装文件分区为sda4

2.重启，按e编辑选项

e

将原来的hd:LABEL=CentOS\x207\x20x86_64 quiet 修改为hd:\dev\sda4 quiet，如下图

3.继续安装

按 Ctrl + x 继续安装Centos系统即可。