我是 Ubuntu 用户。但我想将我的操作系统从 Ubuntu 更改为 Fedora。所以我想要Fedora 21。但是有一个问题。我使用 USB 驱动器来启动 Fedora 21。当我尝试安装 Fedora 时，出现错误。
dracut-initqueue[109]: Warning: Could not boot.
dracut-initqueue[109]: Warning /dev/disk/by-uuid/66fad037-3a77-4ef1-ac36-3b20262dbec7 does not exist
Starting Dracut Emergency Shell
Warning: /dev/disk/by-uuid/66fad037-3a77-4ef1-ac36-3b20262dbec7 does not exist
Generating "/run/initramfs/sosreport.txt"
Entering emergency mode. Exit the shell to continue.
Type "journalctl" to view system logs.
You might want to save "/run/initramfs/sosreport.txt" to a USB stick or /boot
after mounting them and attach it to a bug report.
dracut:/#
那么您能告诉我该由谁来解决这个问题吗？因为我被困住了。