Centos grub boot missing

Redhat/Centos grub boot  missing. in order to boot from the Redhat/CentOS box with grub problems, you need to know 2 things:

• The /boot partition
• The root (/) partition.

Problem Redhat/centos grub boot missing not login into server.

Step 1: find the /boot partition/

List available disks at grub prompt

grub> find (hd        -->TAB key

List available disk partition at grub prompt

grub> find (hd0,        -->TAB key

Examples of find command a grub.conf file

grub> find (hd0,0)//grub/grub.conf
   (hd0,0)
   (hd0,1)
   (hd0,2)

grub> find (hd0,0)/boot/grub/grub.conf
   Error 15: File not found

Step 2: The root (/) partition.

grub> root (hd0,0)
grub> kernel /vmlinuz-2.6.32-431.el6.i686 ro root=/dev/sda1
grub> initrd /initramfs-2.6.32-431.el6.i686.img
grub> boot

For example my system:

# fdisk -l

# ls -la  /boot

Redhat/Centos grub boot  missing, the linux commands above helpful you! 

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