Recover mysql using data folder
STEP 01

Go see if MySQL is running on the Server. Run this

service mysql status


If the status says SUCCESS! MySQL running (some number) then shutdown mysql

service mysql stop


STEP 02

Run ls -l /etc/my.cnf. If the file exists, rename it with mv /etc/my.cnf /etc/my.cnf.backup

Then, copy your my.cnf into /etc

STEP 03

See if you have a previous mysql setup

ls -l /var/lib/mysql


If you do, do this

mv /var/lib/mysql /var/lib/mysql.old
mkdir /var/lib/mysql


Then, copy your /root/home/recovered/mysql into /var/lib/mysql

STEP 04

chown -R mysql:mysql /var/lib/mysql


STEP 05

service mysql start


GIVE IT A TRY !!!