grub.cfg

set default="0"

function load_video {
  insmod efi_gop
  insmod efi_uga
  insmod video_bochs
  insmod video_cirrus
  insmod all_video
}

load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2

set timeout=60
### END /etc/grub.d/00_header ###

search --no-floppy --set=root -l 'CentOS 7 x86_64'

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Install HeadStack VoIP Distro 7 v1.9' --class fedora --class gnu-linux --class gnu --class os {
        linuxefi /images/pxeboot/vmlinuz inst.ks=cdrom:/dev/cdrom:/ks-efi.cfg inst.nosave=all
        initrdefi /images/pxeboot/initrd.img
}
menuentry 'Test this media & install CentOS 7' --class fedora --class gnu-linux --class gnu --class os {
        linuxefi /images/pxeboot/vmlinuz inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 rd.live.check quiet
        initrdefi /images/pxeboot/initrd.img
}
submenu 'Troubleshooting -->' {
        menuentry 'Install CentOS 7 in basic graphics mode' --class fedora --class gnu-linux --class gnu --class os {
                linuxefi /images/pxeboot/vmlinuz inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 xdriver=vesa nomodeset quiet
                initrdefi /images/pxeboot/initrd.img
        }
        menuentry 'Rescue a CentOS system' --class fedora --class gnu-linux --class gnu --class os {
                linuxefi /images/pxeboot/vmlinuz inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 rescue quiet
                initrdefi /images/pxeboot/initrd.img
        }
}