Precautions need to be followed before retrieving RAID 5 Data :-
1. Do not format the Hard disk.
2. Minimum two Hard disk is required for recovery of data.
3. Do not try to mount single Hard disk of RAID 5 on any Linux system.
Steps to recover data : –
1. Install mdadm package in normal Linux system.
2. Connect the two properly working (RAID 5)Hard disk to that machine.
3. Assemble raid device(hard disk) using the below given command
mdadm -A -R /dev/md5 /dev/XXX /dev/XXX
Note :- Here XXX is the Harddisk Name(device name) for eg:- /dev/sda