Whether it is your personal files or large-scale enterprise applications computer needs to store information. This information, popularly known as data is stored as bits and bytes on various media.
Data can be stored in many ways like removable disks, hard drives, pen drives, DVDs or CDs etc. Though these storage products are reliable, at any time of the day or night an electronic or mechanical device can fail to function in a proper way. In addition the term could be used also for forensic analysis, there are cases where you many need to recover inaccessible or lost data for example a forgotten password or a file deleted intentionally by cyber criminals . At times, the storage devices become physically unusable due to disaster like fire, flood or any other means. Thus, data recovery process is used for recovering the data in a safe and reliable manner in the case when normal means of accessing data fails.
In majority of the cases, data recovery is an easy process but in a few cases, an exhaustive and detailed analysis may be required to recover the data. Physical damage will at times results in data loss and logical damage needs to be corrected since it may result in inaccessible files or corrupt files.
Logical damages normally occur due to spike burst in the voltage supply or power outage, which will result in your file to be incompletely written. Occasionally hardware problems are also the reason for logical file problems. For example, consider the case of the HDD driver controller failing and data not be written to the file system.
Logical data recovery is much simpler and not much skill is required. Today most operating systems provide tools for recovering and correcting logical file problems.
There are two popular methods for recovering logical files
- Data consistency checking
In case of consistency checking you, scan the HDD or a storage media to check and ensure that there are no CRC errors
This technique is used for recover of data from a storage media where there is no information on the file system.
In case of physical recovery popular ways to achieve recovery is
You could replace a few parts of the HDD to get the HDD working again in the process recovering the data
Using Disk Imaging, you can reconstruct the original file system
It is therefore seen that in the case of physical recovery you need to take the help of professionals who are well trained to perform data recovery operations.
You should know that not all data is recoverable.
If you have tried to use the tools provided by the operating system and still not achieved success do not panic. Try getting in touch with a professional.
You should try to calm yourself down as the technicians and service representatives who will help you in recovering your data must have recovered data earlier and have considerable years of experience. They will help you in gaining confidence in recovering your lost data and will ensure that no further loss of data occurs.
Some ways to ensure that no data is lost is to take a backup of you data on a daily basis. Also, ensure to use surge protectors and UPS in your premises.