label centos761810x8664
 	MENU LABEL CentOS 7.6.1810 x86_64
 	KERNEL /pxeknife/installers/centos/7.6.1810/x86_64/vmlinuz 
 	APPEND reiserfs jfs xfs btrfs initrd=/pxeknife/installers/centos/7.6.1810/x86_64/initrd.img method=http://centos.mirror.constant.com//7.6.1810/os/x86_64/ ip=dhcp