This is alot. hope you can understand it. the first and last commands said no such file or directory. Here is the output of those commands...
login as: root
root@192.168.200.xx's password:
Last login: Fri Apr 6 08:28:58 2018
[root@Zimbra ~]# cat /home/boot/grub.conf
cat: /home/boot/grub.conf: No such file or directory
[root@Zimbra ~]# cat /home/etc/fstab
#
# /etc/fstab
# Created by anaconda on Wed Jan 4 00:23:15 2012
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_mail2-lv_root / ext4 defaults,noatime 11
/dev/vda1 /boot ext4 defaults 12
#/dev/vdb /opt ext4 defaults,noatime 12
UUID=6d930f71-6993-4442-926a-be1a23b20f4f /opt ext4 defaults,noatime 1 2
UUID=9b046257-af4e-45c5-b1db-8461f8bc6980 /opt/ZBack/backup ext4 defaults,noatime 1 2
/dev/mapper/vg_mail2-lv_swap swap swap defaults 00
#
#####
# This Zimbra backup drive is mounted at the end of the
# init startup process. Ref. /etc/rc.d/rc.local
#
# /dev/sda /opt/ZBack/backup ext4 _netdev 00
####
#
tmpfs /dev/shm tmpfs defaults 00
devpts /dev/pts devpts gid=5,mode=620 00
sysfs /sys sysfs defaults 00
proc /proc proc defaults 00
tmpfs /opt/zimbra/data/amavisd/tmp tmpfs defaults,noexec,nodev,nosuid,size=1024m,mode=750,uid=zimbra,gid=zimbra 0 0
#####
## FTP Server Data Mappings
/opt/ftp/virtual_users/ACO\040Course /opt/ftp/virtual_users/csmith/ACO\040Course none rw,bind 0 0
/opt/ftp/virtual_users/ACO\040Course /opt/ftp/virtual_users/cseaton/ACO\040Course none rw,bind 0 0
/opt/ftp/virtual_users/ACO\040Course /opt/ftp/virtual_users/srichter/ACO\040Course none rw,bind 0 0
/opt/ftp/virtual_users/ACO\040Course /opt/ftp/virtual_users/anon_home/ACO\040Course none r,bind 0 0
/opt/ftp/virtual_users/ACO\040Course /opt/ftp/virtual_users/kbanasky/ACO\040Course none r,bind 0 0
[root@Zimbra ~]# ls /home/boot
config-2.6.32-220.el6.x86_64
config-2.6.32-431.23.3.el6.centos.plus.x86_64
config-2.6.32-431.29.2.el6.centos.plus.x86_64
config-2.6.32-431.5.1.el6.centos.plus.x86_64
config-2.6.32-504.12.2.el6.centos.plus.x86_64
config-2.6.32-504.8.1.el6.centos.plus.x86_64
config-3.10.10-1.el6.elrepo.x86_64
config-3.12.5-1.el6.elrepo.x86_64
config-3.13.1-1.el6.elrepo.x86_64
config-3.19.0-1.el6.elrepo.x86_64
efi
grub
initramfs-2.6.32-220.4.2.el6.centos.plus.x86_64_kvb.img
initramfs-2.6.32-220.el6.x86_64.img
initramfs-2.6.32-431.23.3.el6.centos.plus.x86_64.img
initramfs-2.6.32-431.29.2.el6.centos.plus.x86_64.img
initramfs-2.6.32-431.5.1.el6.centos.plus.x86_64.img
initramfs-2.6.32-504.12.2.el6.centos.plus.x86_64.img
initramfs-2.6.32-504.8.1.el6.centos.plus.x86_64.img
initramfs-3.10.10-1.el6.elrepo.x86_64.img
initramfs-3.12.5-1.el6.elrepo.x86_64.img
initramfs-3.13.1-1.el6.elrepo.x86_64.img
initramfs-3.19.0-1.el6.elrepo.x86_64.img
initrd-2.6.32-220.el6.x86_64kdump.img
lost+found
symvers-2.6.32-220.el6.x86_64.gz
symvers-2.6.32-431.23.3.el6.centos.plus.x86_64.gz
symvers-2.6.32-431.29.2.el6.centos.plus.x86_64.gz
symvers-2.6.32-431.5.1.el6.centos.plus.x86_64.gz
symvers-2.6.32-504.12.2.el6.centos.plus.x86_64.gz
symvers-2.6.32-504.8.1.el6.centos.plus.x86_64.gz
symvers-3.10.10-1.el6.elrepo.x86_64.gz
symvers-3.12.5-1.el6.elrepo.x86_64.gz
symvers-3.13.1-1.el6.elrepo.x86_64.gz
symvers-3.19.0-1.el6.elrepo.x86_64.gz
System.map-2.6.32-220.el6.x86_64
System.map-2.6.32-431.23.3.el6.centos.plus.x86_64
System.map-2.6.32-431.29.2.el6.centos.plus.x86_64
System.map-2.6.32-431.5.1.el6.centos.plus.x86_64
System.map-2.6.32-504.12.2.el6.centos.plus.x86_64
System.map-2.6.32-504.8.1.el6.centos.plus.x86_64
System.map-3.10.10-1.el6.elrepo.x86_64
System.map-3.12.5-1.el6.elrepo.x86_64
System.map-3.13.1-1.el6.elrepo.x86_64
System.map-3.19.0-1.el6.elrepo.x86_64
vmlinuz-2.6.32-220.el6.x86_64
vmlinuz-2.6.32-431.23.3.el6.centos.plus.x86_64
vmlinuz-2.6.32-431.29.2.el6.centos.plus.x86_64
vmlinuz-2.6.32-431.5.1.el6.centos.plus.x86_64
vmlinuz-2.6.32-504.12.2.el6.centos.plus.x86_64
vmlinuz-2.6.32-504.8.1.el6.centos.plus.x86_64
vmlinuz-3.10.10-1.el6.elrepo.x86_64
vmlinuz-3.12.5-1.el6.elrepo.x86_64
vmlinuz-3.13.1-1.el6.elrepo.x86_64
vmlinuz-3.19.0-1.el6.elrepo.x86_64
[root@Zimbra ~]# cat /boot/grub.conf
cat: /boot/grub.conf: No such file or directory
[root@Zimbra ~]#