How to retrieve lost files? Recommend several software to help you

There are too many files stored in our computer. Sometimes we will not be able to find out where the required files are or may be deleted by mistake. File, but the file that was accidentally deleted can't be retrieved. In fact, of course, you can get it back. Let's see how it is retrieved.

First, why can the deleted data be recovered?

What kind of data can be recovered? In a word, as long as the physical form of the hard disk has not changed, the data can be recovered. In the home computer, whether you are Shift+Del or simple Format format, these deleted data or files can be recovered (the last part of the article will list commonly used home data recovery software and simple operation skills, Users who need it can click the last page directly). The author first briefly introduces the storage mechanism of the hard disk and the principle of restoring data.

Note that the author said "as long as the physical form of the hard disk has not changed", then the data on the hard disk can be recovered, we usually do not change the operation (delete or format) on the disk on the computer. The physical nature of the disk, so in principle can be restored. The primary practice is to use file recovery software on the computer, such as Germany's Kroll Ontrack's Easy Recovery, Russia's PC3000, or Norton's NDD and China's DiskGenius can easily carry out the primary recovery operation of the disk, basically using the software Complete recovery for general data deletion (including Shift + Del or low-level deletion). A further recovery method is disk-level, that is, the use of specialized instruments after the removal of the storage components of the disk (professional instruments are generally developed by some large companies or countries, companies such as IBM) for data recovery, this recovery method There are high requirements for the operating environment, so the cost is generally more expensive. Advanced file recovery has become Deeply Recovery—— deep recovery, this technology is state-level, and only a few countries currently have this technology. The deep recovery is that as long as some data has been written on your hard disk, even after multiple deletions, writing new content coverage, and then deleting, he can recover to some extent, because the data exists on the hard disk. According to the order in which the magnetic poles are arranged. For example, if you use a pencil to write on the book, you erase the word on the paper with an eraser. There will be handwriting on the paper, and you tear the paper. This paper has this back. A few sheets of paper under the sheet of paper will still leave traces. Therefore, even if the hard disk is flooded, burned, and broken, it is possible to recover the data. This is the deep recovery! Even if the disc is smashed into several pieces The film, put them together, there is still the possibility of recovery.

Second, commonly used data recovery software recommended

1, Easy Recovery

Easy Recovery is a very powerful hard disk data recovery tool. Can help you recover lost data and rebuild file system. EasyRecovery does not write anything to your original drive. It mainly rebuilds the file partition table in memory so that data can be safely transferred to other drives. You can recover data from a hard drive that has been corrupted by a virus or has been formatted. The software can recover hard drives larger than 8.4GB. Support for long file names. The damaged hard disk is like a lost boot record, a BIOS parameter data block; a partition table; a FAT table; the boot area can be restored by it.

View: Easy Recovery and Download

2, PC3000

PC-3000 is a commercial professional research and development by the famous Russian hard disk laboratory ACE Laboratory. Repair the hard drive synthesis tool. It manages the hard disk from the internal software of the hard disk, and changes and repairs the original data of the hard disk.

The use of PC3000 is relatively difficult and requires a certain knowledge of the disk.