Things to know about bad sectors on your hard drive

Hard drive after a period of use will encounter some signs such as not booting, the machine hangs while the hard drive signal light is constantly lit ... That may be the indication that the drive Your hard disk may have been corrupted. Therefore, you should always check your health condition Hard Drive And always backup in case of data loss due to hard disk sector bab. Here are some ways to check and fix the bab sector of the network administrator to be able to protect your computer in the best way. Sector can be described simply as the smallest unit divided into to store data in the hard disk drive. By default, a sector can hold 512 bytes of data. After a period of use, hard drives often appear to be bad sectors called bad sectors. These are areas where data integrity is not maintained and are automatically masked by the operating system, so it is difficult to determine, especially if a large number of sectors are being used. If your data is saved to these bad sector , it will be difficult to be safe. Bad sector is a reality of computer hard drives and generally you do not need to worry too much about this situation if you know it well.

Classification of bad sectors

There are two types of bad sectors: bad sector by physical error Hard drives (bad sectors) and bad sectors logical error of software (called bad sector "soft"). Technically, bad sectors hardly can be repaired, and bad sectors can be fixed. A bad physical sector is a state in which a cluster of sectors is physically damaged. The reason may be that the hard drive's reader has touched a piece of the disk surface and damaged its surface, or maybe some dust has dropped that sector and destroyed it. In addition, the surface of the diskettes in the hard drive may have caused some defects, causing the sectors to become physically damaged. As mentioned, this type of error is certainly not fixable. Meanwhile, bad logical boolean occurs when a storage sector is not operating as expected. The operating system may have attempted to read the data on this region and detect the error code ECC Does not match the contents of the memory area, causing the error. These memory locations can be considered bad sectors, and fortunately they can be fixed with the tool Disk Check built in Windows.

Causes bad sectors of physics

Typically, after a period of use, the hard drive will appear the physical bad sectors. There are also cases where the hard drive has bad physical sector since it was just released. In general, modern day production technology is not perfect, and bugs will certainly occur for some products.
For traditional hard drives, bad sector physics may occur due to defects in the manufacturing process or during use. Faults may be caused by a dropped disk, the reader touching the disk surface and damaging some of the sectors, air or dust that may have fallen into the drive. Bad logical boolean occurs by the problem related to software . For example, if your computer is turned off due to a power outage or unexpected power outage, it can cause the hard drive to suddenly power off while writing data. In some cases, it may cause some sectors on the hard disk to contain data that does not match their correcting code. Therefore, this area will be marked as bad sectors, also known as bad sectors. Besides, virus And malware can also cause problems with the computer system and create logical bad sectors. Over time, they can spread throughout the hard drive.

Check and fix bad sectors

The fact is bad sectors will have serious consequences. Even if your computer's hard drive is working normally, it may contain bad sectors and they can grow and corrupt your data. This is why you should always data backup in his computer. Backups are the only thing to do to prevent data loss.

When the computer detects and reports bad sectors, the system will mark the bad sectors and ignore them whenever data is written. The broken sector will be located and the data will be written to another area. However, if you have written important data to that sector before the error occurs, it certainly can not be restored. If the hard drive shows some bad sectors it does not mean that it is going to crash. However, over time, bad sectors can spread to other places, and it's time to replace your hard drive.

Fortunately, the operating system Windows with built-in tools Disk Check (also known as chkdsk) helps you scan the entire hard drive of the computer to check and detect bad sectors, mark them and fix them if possible. You can run this tool from the command line Run Command Windows by typing in the chkdsk command line. Or you can right-click on any drive partition you want to check, select Properties, select the Tools tab, and click the button Check Now in the Error-checking section. Finally press the button Start to start the scanning process. Good luck!