How Much Data Can Be Recovered on Different Types of Data Losses?

When we suffer data loss, two questions will spring to mind. How can we recover the data? How much data can be recovered? In this article, we will discuss about the data recovery in depth.

The odds of data recovery actually depend on the real causes of data loss and subsequent users’ actions. To increase the chances, you’d better stop further writing on the storage and take recourse to related recovery software. Now we will talk about the different chances of data recovery in 5 varying types of data losses.Data Recovery after Data Loss

1. File Deletion

Data loss resulted from accidental file deletion is considerably common for the majority of computer users. In this case, the odd of recovery is up to two factors. One is whether the storage space occupied by the deleted file before is re-used or not. On average, as long as you stop working on the computer after accidental deletion, the space won’t be overwritten immediately. So if you’re able to take effective recovery measures in time, you will succeed in retrieving the deleted file.

The other factor which affects recovery chances is the different file system on your computer. For instance, in NTFS file system, the chances of recovering deleted files will be higher, in that as long as the file descriptor still exists on the disk, related recovery software can easily extract the info about the deleted file. For example, to recover deleted PST files, you ought to employ a specialized PST repair tool.

2. File System Formatting

Compared to file deletion, recovery after file system formatting will be more complex and cumbersome. The formatting will create a new file system on your drive, which will overwrite the original information. That is to say, formatting will destroy a portion of information on the drive.

Actually this kind of lost data is still recoverable. As for the chance of data recovery, it depends on the difference between the new and previous file systems. For most file systems, they may still keep the original file allocation information, directory records, file names and other critical information. Hence, via effective recovery software, you still can recover some valid data.

3. Partition Information Loss

Partition information loss is a type of data loss which occurs from human error or faulty operations on drive. In this case, computer will lose the information about partitions, such as sizes and locations. Fortunately, if the data loss doesn’t involve the file system, efficient recovery software can restore the data in perfect order.

4. Physical Storage Device Failures

One typical instance of physical storage device failures is hard drive failures. As we all know, every hard drive has its lifespan. When its lifespan is ending, the drive will go on strike. You will lose the inner data permanently. In general, the majority of hard drive failures can originate from many reasons, such as physical damages, mechanical failures, power failures or logical issues.

When you realize the problem of storage device failures, you should immediately shut down your computer. Besides, never attempt a DIY recovery, such as open the device and fix the heads, etc. What you can do is to call in professional assistance. As long as the file system remains intact, you will get a good chance in data recovery.

5. Overwritten Data

It is entirely a boast if one recovery service promises you that they can recover your data even though you’ve overwritten it. Even if in some knotty scenarios, such as hard drive corruption by flood, sometimes data still can be retrieved. However, if the data is overwritten, that’s impossible. You should never trust in the recovery companies which claim that they are able to recovery this kind of lost data.

Author Introduction:

Shirley Zhang is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including sql recovery and outlook repair software products. For more information visit

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