[root@localhost ~]# ll /tftpboot/linux-install/
total 8040
-rwxrwxrwx 1 root root 292 Jun 25 15:47 boot.msg
-rwxrwxrwx 1 root root 919 Jun 25 15:47 general.msg
-rwxrwxrwx 1 root root 6302756 Jun 25 15:40 initrd.img
-rwxrwxrwx 1 root root 1082 Jun 25 16:09 ks.cfg
-rwxrwxrwx 1 root root 817 Jun 25 15:47 options.msg
-rwxrwxrwx 1 root root 517 Jun 25 15:47 param.msg
-rwxr-xr-x 1 root root 13148 Jun 25 15:46 pxelinux.0
drwxrwxrwx 2 root root 4096 Jun 25 15:53 pxelinux.cfg
-rwxrwxrwx 1 root root 490 Jun 25 15:47 rescue.msg
-rwxrwxrwx 1 root root 1826484 Jun 25 15:41 vmlinuz
[root@localhost ~]#

你是虚拟机启动的吧 看看是不是分配的磁盘空间不够 还是没挂载好