我在启动Centos 7时出现此错误，
[ 198.942749] dracut-initqueuel3371: Warning: /dev/centos/root does not exist
[ 198.9438971 dracut-initqueue[337]: Warning: /dev/centos/swap does not exist
[ 198.9433781 dracut-initqueue[337]: Warning: /dev/disk/by-id/md-uuid-00a7896a:5363ef2f:ccd81c8f:8e11e69e does not exist
[ 198.9436701 dracut-initqueue[337]: Warning: /dev/mapper/centos-root does not exist
Starting Dracut Emergency Shell...
Warning: /dev/centos/root does not exist
Varning: /dev/centos/swp does not exist
Warning: /dev/disk/by-id/md-uuid-md-uuid-00a7896a:5363ef2f:ccd81c8f:8e11e69e does not exist
Warning: /dev/mapper/centos-root does not exist
由于我无法恢复启动系统，因此我正在寻找工具来帮助从分区恢复数据。