Grub2-reboot # not working on FreePBX Distro 7 - Based on CentOS 7

I have used the same configuration to successfully add a second menu entry and boot to it via "grub2-reboot # && reboot" in CentOS 7 but nothing I do seems to change the menu entry selection for next boot in the FreePBX Distro 7. Any ideas on what to try to troubleshoot/test/fix? Configs: **cat /etc/default/grub** [root@freepbx ~]# cat /etc/default/grub GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="gfxterm" GRUB_CMDLINE_LINUX="crashkernel=auto biosdevname=0 net.ifnames=0 rhgb quiet" GRUB_DISABLE_RECOVERY="true" GRUB_BACKGROUND=/boot/splash.png **cat /boot/grub2/grub.cfg** [root@freepbx ~]# cat /boot/grub2/grub.cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by grub2-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### set pager=1 if [ -s $prefix/grubenv ]; then load_env fi if [ "${next_entry}" ] ; then set default="${next_entry}" set next_entry= save_env next_entry set boot_once=true else set default="${saved_entry}" fi if [ x"${feature_menuentry_id}" = xy ]; then menuentry_id_option="--id" else menuentry_id_option="" fi export menuentry_id_option if [ "${prev_saved_entry}" ]; then set saved_entry="${prev_saved_entry}" save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z "${boot_once}" ]; then saved_entry="${chosen}" save_env saved_entry fi } function load_video { if [ x$feature_all_video_module = xy ]; then insmod all_video else insmod efi_gop insmod efi_uga insmod ieee1275_fb insmod vbe insmod vga insmod video_bochs insmod video_cirrus fi } if [ x$feature_default_font_path = xy ] ; then font=unicode else insmod part_msdos insmod ext2 set root='hd0,msdos2' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2 --hint='hd0,msdos2' 5820774d-3fcf-44fb-86b9-972fab5de985 else search --no-floppy --fs-uuid --set=root 5820774d-3fcf-44fb-86b9-972fab5de985 fi font="/usr/share/grub/unicode.pf2" fi if loadfont $font ; then set gfxmode=auto load_video insmod gfxterm set locale_dir=$prefix/locale set lang=en_US insmod gettext fi terminal_output gfxterm insmod part_msdos insmod ext2 set root='hd0,msdos1' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1' 0123444f-dbb6-421e-ad8a-6f6bfb0a0901 else search --no-floppy --fs-uuid --set=root 0123444f-dbb6-421e-ad8a-6f6bfb0a0901 fi insmod png background_image -m stretch /splash.png if [ x$feature_timeout_style = xy ] ; then set timeout_style=menu set timeout=5 # Fallback normal timeout code in case the timeout_style feature is # unavailable. else set timeout=5 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/00_tuned ### set tuned_params="" ### END /etc/grub.d/00_tuned ### ### BEGIN /etc/grub.d/01_users ### if [ -f ${prefix}/user.cfg ]; then source ${prefix}/user.cfg if [ -n "${GRUB2_PASSWORD}" ]; then set superusers="root" export superusers password_pbkdf2 root ${GRUB2_PASSWORD} fi fi ### END /etc/grub.d/01_users ### ### BEGIN /etc/grub.d/10_linux ### menuentry 'Sangoma Linux (3.10.0-514.2.2.el7.x86_64) 7 (Core)' --class sangoma --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-514.2.2.el7.x86_64-advanced-5820774d-3fcf-44fb-86b9-972fab5de985' { load_video set gfxpayload=keep insmod gzio insmod part_msdos insmod ext2 set root='hd0,msdos1' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1' 0123444f-dbb6-421e-ad8a-6f6bfb0a0901 else search --no-floppy --fs-uuid --set=root 0123444f-dbb6-421e-ad8a-6f6bfb0a0901 fi linux16 /vmlinuz-3.10.0-514.2.2.el7.x86_64 root=UUID=5820774d-3fcf-44fb-86b9-972fab5de985 ro crashkernel=auto biosdevname=0 net.ifnames=0 rhgb quiet initrd16 /initramfs-3.10.0-514.2.2.el7.x86_64.img } if [ "x$default" = 'Sangoma Linux (3.10.0-514.2.2.el7.x86_64) 7 (Core)' ]; then default='Advanced options for Sangoma Linux>Sangoma Linux (3.10.0-514.2.2.el7.x86_64) 7 (Core)'; fi; ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/20_ppc_terminfo ### ### END /etc/grub.d/20_ppc_terminfo ### ### BEGIN /etc/grub.d/30_os-prober ### ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. menuentry "Parted Magic 64-bit LiveISO" { set root=(hd0,msdos2) set isofile="/home/isos/pmagic.iso" loopback loop $isofile linux (loop)/pmagic/bzImage64 iso_filename=$isofile load_ramdisk=1 initrd (loop)/pmagic/initrd.img /pmagic/fu.img /pmagic/m64.img } ### END /etc/grub.d/40_custom ### ### BEGIN /etc/grub.d/41_custom ### if [ -f ${config_directory}/custom.cfg ]; then source ${config_directory}/custom.cfg elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then source $prefix/custom.cfg; fi ### END /etc/grub.d/41_custom ### I've also tried the following and get the same results: sudo rm /boot/grub2/grub.cfg sudo rm /etc/grub.d/* -R sudo rm /etc/sysconfig/grub yum reinstall -y grub2-tools grub2-mkconfig -o /boot/grub2/grub.cfg grub2-install /dev/sda So FreePBX Uses there own Repo, so I followed the above code, but manually downloaded grub2-tools, now I get the follow error: [root@freepbx grub]# grub2-install --target=x86_64 grub2-install: error: /usr/lib/grub/x86_64/modinfo.sh doesn't exist. Please specify --target or --directory. [root@freepbx grub]# grub2-install /dev/sda grub2-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist. Please specify --target or --directory.