DISK DATA RECOVERY

Hard Drive Logical Error vs. Hard Drive Physical Error

As what most people are familiar with, hard drive error can be roughly divided into two types: hard drive physical error and hard drive logical error; the former is often more serious than the latter. When logical errors are detected on a hard drive, it’s very possible that users could recover data from hard drive logical failure completely. But, if the hard drive is damaged physically, the possibility of hard drive data recovery becomes very small.
 

 
If accident really hits on you, you’re advised to get powerful hard drive logical failure recovery software immediately in order to regain all the lost data.
 

High-quality Logical Data Recovery Services

Once you discover logical hard drive failure (also known as logical hard drive damage), you need to take immediate actions to recover files from logically damaged hard drive. Hence, to help people enjoy high-quality data recovery services, I recommend MiniTool Power Data Recovery, which is trusted by millions of users.
 
How to recover data from hard drive logical failure:
 
*–Get a free edition of the software if you have less files (no more than 1GB) to recover or acquire a license for the hard drive logical failure recovery software if you need to recover more data or enjoy more features (like Load Previous Scan Result).
 

 
*–Install the software and run it as fast as you can to see the main interface.
 
*–Follow this tutorial to recover data from the device on which hard drive logical error is detected:
 
1. Select a proper function from the main interface according to actual needs.
2. Choose the target hard drive from the drive list and press “Full Scan” button.
3. Browse the scan result displayed in software and pick out the needed files.
4. Click on “Save” button and set a safe storage path for the files waiting to be recovered.
 

 
That’s all I want to talk about the data recovery after hard drive logical error! Now, I’d like to introduce 3 main types of logical hard drive errors; if you’re interested, please keep reading.
 

3 Types of Logical Hard Drive Failure

In general, logical hard drive damage includes track servo information error, system information area error and sector logical error (which is generally called logical bad track as well).
 

Tack Servo Information Error

It refers to the situation where physical tracks can’t be accessed since the servo information of certain physical track has been damaged or become invalid.
 

System Information Area Error

It means that the hard drive system information area fails to read data in some modules or complete the verification stage during the power-on and self-test process. Thus, the hard drive is not able to enter the preparation state.
 
By the way, the system information area of hard drive is actually a system reserved area inside the hard drive and it has been subdivided into multiple modules to save a lot of hard drive default parameters, settings and internal control procedures.
 

Sector Logical Error

It indicates that some sectors will become invalid because of verification error (ECC or CRC), sector mark error (IDNF), address information error (AMNF), bad block mark error (BBM) and other reasons.
 

 
As you can see, there are many reasons that can lead to hard drive damage. All you can do is be careful enough when you’re working with hard drive, in order to reduce the appearance of hard drive error.