DISK DATA RECOVERY

As is well-known, disk is the carrier of data. Well, how can data be stored to disk? New disks need to be partitioned and formatted before installing and using on system. In general, a disk should be divided into five parts: Master Boot Record, OS Boot Record, file allocation table, directory area and data area. Among them, the “directory area” of “file allocation table” plays an important role. To enhance the safety, system usually saves two copies of the same FAT; while the information in directory area determines the specific storage location of file in disk – It records the starting unit of file (it is the most important), file attributes, file size, etc. When locating a file, operating system will find the specific location and size of file in disk by resorting to the starting unit recorded in directory area in combination with the file allocation table. In fact, the data area of file occupies the majority of disk space, but it means nothing without other four parts. The storage of files in disk is just like a linked list: the list header is the starting address of files and the entire files are not always contiguous; on the contrary, the whole file is connected by a series of nodes. If users want to visit a file, they just need to find the list header. The file deletion we usually say actually means the modification of the first two codes of files in file allocation table. In this process, operating system only marks these files with “deletion marks” and clears the records of file cluster number in file allocation table, so as to release the pace taken up by these files. This is the reason why the disk space has been increased after file deletion while the real information of files still remains in data area. The real information of original files will not disappear until they have been overwritten by new data.
 

The theory of disk partitioning and disk formatting is similar to that of file deletion. The former only changes the partition table while the latter only changes the file allocation table, and they don’t remove data from data area in the real sense.
 

How to recover deleted disk data
After knowing how data are stored in disk, users can recover deleted disk data. Of course, users have to recover deleted disk data by resorting to the third party disk data recovery software. Here, we recommend a piece of disk data recovery software: MiniTool Power Data Recovery. This disk data recovery software is able to help users recover deleted disk data effectively. The picture below is the main interface of this disk data recovery software:
 

 
Five function modules can be found in the main interface and it means that this disk data recovery software has five recovery methods: “Undelete Recovery”, “Damaged Partition Recovery”, “Lost Partition Recovery”, “Digital Media Recovery” and “CD/DVD Recovery”. Different recovery modules are designed for different data loss situations. Since users need to recover deleted disk data, they should click the first module to enter the following interface:
 

 
At this time, all partitions in computer hard disk will be displayed in the interface of disk data recovery software. Users only need to select the partition where deleted data were and click “Recover” button to scan the selected partition.
 

 
At the end of scanning, above interface of disk data recovery software will appear. In this interface, users are able to preview files by checking files needing to be previewed and clicking “File Preview” button. In order to recover deleted disk data, users ought to click “Save Files” button after checking all data they want to recover. We suggest users saving recovered data into other partitions to avoid accidental damage. Up to now, users have finished the whole process to recover deleted disk data. If users want to know more details about this disk data recovery software, they are advised to visit its downloading website: http://www.disk-data-recovery.biz.