Regarding formatting, what is formatting?

When you format your hard drive only to remember that there is important data that is not backed up, can such data be saved? The answer is yes.

Speaking of this, it is necessary to briefly introduce the file allocation table, the system Chinese allocation is based on the cluster as a unit, the record in the file allocation table is the cluster occupied by the file, the file allocation table is stored in the file and directory allocation, all files in the hard disk have their own corresponding address in the file allocation table, the operation of the file is to first find the address of the file in the file allocation table, and then read or write the corresponding track, so the deletion of the file does not mean that the file is really cleared, but to clear the address of the file in the file allocation table, naturally you can't see it in the operating system, in fact, the real data is still saved on the track of the hard disk.

The principle of recovering misformatted files is to recover the deleted file allocation table, but there is one thing to remind users that after the hard disk is formatted, do not have any write operation on the hard disk, so as not to overwrite the original files, and do not use the so-called repair tool to repair, otherwise it may cause greater damage, and even cause irreparable serious consequences, the best solution is to stop all operations on the misformatted hard disk and send the hard disk to a professional data security company, The address of the deleted allocation table is calculated and manually restored.

Finally, it should be reminded that the current hard drive data recovery technology has been quite mature, and the recovery success rate is as high as 95% for data loss caused by accidental deletion, accidental formatting, wrong partition, and false ghost, so there is no need to give up easily after data loss.

It can't be restored after formatting, how do you?

That's deleting the file in the file table, not physically and completely.

This is also the reason why deleted files can be recovered.

After you delete by mistake, as long as you have not written files to the partition where you deleted the files, there is still a chance to recover the deleted files. However, there is no guarantee that all will be restored. Nowadays, there are many software to recover data, such as:

EasyRecovery Pro, FinalDataEnterprise20, etc., here I recommend using EasyRecovery Pro. At the same time, I will introduce the steps of data recovery in both Windows and DOS situations.

Because the high grid used only destroys the file partition table and does not completely destroy the data.

To put it simply, formatting is to divide a blank disk into small areas and number them for the computer to store and read the data. Without this work, the computer would not know where to write or where to read.

The hard disk must be partitioned before it can be used, and after the disk is partitioned, the next step is to format the hard disk, and the hard disk must be formatted before it can be used.

Formatting is the creation of tracks and sectors in the disk, and after the tracks and sectors are established, the computer can use the disk to store data.

Under the Windows and DOS operating systems, there are programs for formatting information, but once you format the hard disk, the data in the hard disk will be all gone! So before you do this, make sure that the data on the disk is still needed, and if so, back it up again.

Advanced formatting is to erase the data on the hard disk, generate boot area information, initialize the FAT table, mark logical bad sectors, etc.

Low-level formatting is to divide the blank disk into cylinders and tracks, and then divide the tracks into several sectors, and each sector is divided into identification part ID, interval gap and data area. As you can see, low-level formatting is a pre-high-level format, and it can only be done in a DoS environment. Moreover, low-level formatting can only be used for a single hard drive, not a single partition.

Each hard drive is already low-level formatted by the drive manufacturer at the factory, so users usually don't need to do low-level formatting again.