Linux--change boot location in linux and fstab

Boot from LINUX Live CD


cd /mnt

mkdir temp

mount /dev/sdb1 temp

cd temp

mount /dev/sda1 boot
cd /
chroot /mnt/temp

cd /boot
vi grup/grup.conf   "change the boot location"

Editing fstab to automount partitions at startup

this tutorial is not solely for automounting but how to edit fstab efficiently and gaining some knowledge about it.

steps:

1. sudo gedit /etc/fstab

2. now the fstab file is open in gedit. you need to add an entry for the partition to automount it at startup.

the format of a new entry is like this:

  file_system   mount_point   type  options     dump  pass            

you will see this in the file and you need to add your new entry under this line.

brief explanation of the above format:

1.file_system = your device id.

use this:

/dev/sdax ( you should check it with sudo fdisk -l)

sample

/dev/sdb1               /                       ext3    defaults,usrquota,grpquota        1 1