Bad sectors for hard disk - as a cancerous tumor for the body. The presence of bad sectors on the hard drive leads to the fact that the computer freezes, suddenly reboots during operation, does not save information or keeps it distorted, "the system crashes into blue screen death ", the system crashes after a short period of use. bad sectors, unfortunately, the diagnosis for the drive is disappointing - speaking in language system administrators the disk will "crumble" further, bad clusters will grow, the number of bads will only increase and the "screw" will be best replaced immediately. Macrorit Disk Scanner is free program to test the hard disk for bad sectors.
In addition, it is still possible to recover files from damaged hard disk caused by bad sectors. Let's take a look at a free bad patch repair tool together. It is capable of checking and repairing damaged sectors for hard drives and other storage devices.
Meanwhile, this free manager sections and free recovery data trusted and recommended by millions of users. As we all know, bad sector recovers damage data, so you must save or restore data first.
Search for bad sectors
A computer hard drive is a mechanical product and therefore the most unreliable device on a computer. Because of this, inevitably, over time, bad sections appear on the hard disk - bad sectors. The only function of Macrorit Disk Scanner is to scan the hard disk surface to detect defective, damaged, bad and bad blocks. To test hDD just run the program, select the drive under test from the list and click on the "Start Now" button. Macrorit Disk Scanner diagnoses every sector on the disk and visually displays a scan map, which displays the state of the blocks: green - the block is healthy, red - the block is bad.
How to check bad sectors using free bad sector repair software. Before you start, you can set the timeout value or range of the scan cylinders by entering an exact value. If you are not an expert and have no idea about these settings, you can simply follow the default values.
The branches marked in red blocked are damaged and these are bad sectors. Heavy does not mean a bad sector, but it is not in good shape. How to repair bad sectors with free tool restoration of bad areas. Bad sector check is a read-only process and does not affect the disk itself or files on the hard drive, but bad sector repairs are not performed. Before trying any troubleshooting solution, make sure you have a good backup of your files on the damaged disk, as restoring may result in file loss or file system corruption.
The most common reason for a slow HDD (hard disk drive) today is broken sectors... To eliminate such errors, it is necessary to detect them in time, and then programmatically correct them. But initially it is worth considering the reasons for their occurrence, as well as the types of such malfunctions.
Bad Sector Symptoms
Of course, no one will just start checking the hardware, because when everything is working properly, then there is no reason to look for problems. This is usually preceded by:
How to restore sector zero on a computer hard disk?
Bad sector repair destroys data on the disk; more precisely, it destroys data on bad sectors or near bad sectors... Thus, you need to do backup data until the damaged sector is restored. It is generally accepted that a disk cannot read data due to bad sectors, and in this state, you need to recover the data first rather than repair the bad sector.
Step 2 You will receive a warning that first asks you to back up your data. Step 4 After the repair process is complete, you will receive the following message. Please note that not all bad sectors are repairable, such as physical bad sectors.
- Errors that occur in Windows during various file manipulations (copying, moving, etc.);
- Slow computer performance;
- Sudden PC restarts.
Causes of errors
Errors in HDD operation, software and physical plan can occur for many reasons. One of the most common is a sudden power outage and shutdown windows work... This is usually preceded by a power surge. If at this time the HDD was not active and the data was not read or written, bad sectors are unlikely to appear, which cannot be said about the situation when copying was carried out. Similar situations also arise if the computer was shut down incorrectly, when the power button was held for several seconds.
One of the reasons is that the hard drive has bad sectors when it is manufactured; Experienced data recovery engineers know which drive is likely to have bad sectors, judging by its brand, production time, uptime, etc. another reason is incorrect operations such as excessive defragmentation.
Fix bad sectors in a timely manner and use the disk with care. It will become a vicious circle if you do not correct the bad sectors in a timely manner, because this can lead to the deterioration of the sectors. This way you are better at detecting bad sectors regularly and executing bad sectors in a timely manner. However, despite the fact that bad sectors are fixed, the disk is more risky to receive bad sectors than normal ones. Therefore, you must be careful when using a disk that has bad sectors before and do not save important data on it.
Usually, after such a shutdown, immediately upon turning on the computer for the first time to any windows versions begins automatic check HDD by standard means, which, in theory, should detect errors and fix them. But not everything is so rosy here. The reason is that such a "native" check from Windows cannot fix most errors, so it starts running every time the computer is turned on.
The logical bad sector can be fixed and the physical bad sectors cannot be recovered, but usually they can be reassigned. Poor recovery and detection software can detect bad sectors, repair logical bad sectors, and reassign physical bad sectors.
Low level formatting and bad sector. Low level formatting can be used to eliminate bad sectors on the server. Nonetheless, low-level formatting - double-edged sword; it can fix bad sectors as well as make the hard drive hard drive, especially if the hard drive has physical bad sectors. Thus, low-level formatting is the last option for repairing bad sectors.
Scanning by standard means
It is worth taking a closer look at the work of standard Windows 7 tools in order to understand how it goes hDD check for bad sectors. To run such a check using the "explorer" you need to go to my computer and right-click on the "mouse", select "Properties". Next, go to the "Service" tab, where we click "Check".
Bad sector and new disc... It is not known that in the manufacture of a hard disk there are areas on the platter that have bad sectors! It is one thing to note if your hard drive contains irreparable bad sectors, it is not advisable to store important data on that drive for data security reasons.
Bad sectors are the most common form physical damage hard drive. These are early signs of a disk crash as it gets worse over time. A bad sector is a sector on a disk whose data cannot be written or read due to physical damage or mismatched parity bits on the disk.
When carrying out such a check, it is recommended to indicate in the process parameters - automatic repair of damaged areas. But, as already mentioned, standard means can detect errors, but they do not always eliminate them, so the system will display a message that it is impossible to correct the bad sector.
There are two types of devices. After you confirm the device names for your damaged disk and new to copy your data to the command line console or to the terminal console, you can start duplicating data. To copy a disc to an image file. ... If you are copying a disc, the destination must also be a disc, not a partition. If you are copying a section, the target section must be large enough. Copying the entire disc is recommended.
Disks should be copied along sector boundaries. Check your drive specifications to find out. Large block sizes dramatically increase copying speed up to a certain point. Examples of commands. To copy a disk or partition to a file, if no path is specified, the file will be created in the current directory. After a long using hard disk, users can find various problems with hard disk... And disk bad sector is the most common problem. There are various problems that can cause damaged sector of hard disc: poor quality or aging, physical damage or shock, excessive heat, etc.
You can also use the command windows string, register special commands to perform such an action. So, "chkdisk c: / f" - will denote the start of checking the surface of HDD c automatic correction... But for working with files in nTFS system another command is applied - "chkntfs / x c:".
It is worth noting that after starting the check in this way, in the future, a constant check of the hard drive will not appear at the start of the operating system.
The hard disk is widely used for storing massive data. Data may be lost if there are some bad sectors on the hard disk. To avoid data loss caused by data loss, users need to back up important data in a timely manner.
Checking hard disk for bad sectors
At the same time, we will show you the situations that can arise when you have bad sector problems on your hard drive. Next introduction. 1: When users open and run the file, they may find that the speed is very slow, or they can obviously hear a strange noise, or sometimes receive a prompt that they cannot read and write. 2: If the hard disk automatically scans itself when the computer starts up, there are some errors in the hard disk. If the disk check cannot be completed, the hard disk has bad sectors.
But before you work independently in command line - it is recommended to read the help information regarding the use of various commands.
Informer programs
There are several types of special applications in this area. The most famous programs are Everest and CPU-Z. However, they are considered general-purpose utilities.
Moreover, even if users boot from a floppy disk, they cannot see the drive letter. 4: When reading a file or running programs hard the disk will read data many times, or it will take quite a long time to complete this task. You can protect these bad sectors if you want.
Sometimes, users can reformat the hard drive to recover some bad sectors. But this method is not very efficient. If users cannot repair bad sectors, they can hide them. First, users need to learn about the general range of bad sectors. Then format it and write down the percentage when bad sectors appear, and then calculate the approximate location of bad sectors according to the capacity of the partition. After that, users have to divide the space as a separate section.
But a better and more functional application, which has not only the functions of an informer, but also a scanner, is CrystalDiscInfo. This program, except for the ability to display all necessary information about the state of the device and its characteristics, allows some of them to change, for example, the rotation speed of the magnetic disk. 
Note: Users should carefully identify the range of bad sectors. Otherwise, bad sectors will be used again or some hard disk space will be wasted. And, before hiding bad sectors, it is recommended to back up some important data.
If sector 0 of the hard disk is bad, the entire disk cannot be used. They can then select Configure from the Option menu and then press the space bar to remove the trick. Open the Select menu and select Partition Table. At this time, users just need to change the starting cylinder from 0 to After formatting, users can write the partition information from 1 sector. Classification There are two types of bad sectors - hard and soft. Hard bad sectors are those that are physically damaged and cannot be repaired.
Programs for recovering the hard drive
If we are not talking about purely informational utilities or windows tools, and specifically about applications that can detect and fix broken sectors - it is worth noting, first of all, such a program as Victoria.
In total, you can find a large number of programs for working with HDD in operating system Windows, but it is best to use a single application for specific purposes, for example:
The best ways to check your hard drive for bad sectors
A sector is a subdivision of a track on a memory device, and sectors that have become bad cannot be used because they have become permanently damaged. While there is no hard and fast rule, it was generally accepted that a new disk should have zero bad sectors. Replacement of the device is recommended.
Comparison with other programs
The typical recommended practice for testing a storage device for bad sectors is to use the manufacturer's testing program. Most manufacturers have programs that do this. The main reason for this is that manufacturers usually have their own standards built into test programs that will tell you if a drive needs to be replaced or not. The caveat here is that some vendors testing programs do not print out full test results and do not allow a certain number of bad sectors to only speak if they pass or not.
- It is better to use CrystalDiscInfo as a purely informational platform;
- For faster accurate checking hard disk for damage and their degree - Victoria;
- To test the surface of the hard drive - HDD Scan;
- For the most complete rebuilding hard disk - HDD Regenerator.
It should be noted, however, that applications such as HDD Regenerator and Victoria run off-line. windows environment, since they are launched from a separate storage medium (disk or flash drive). At the same time, "Victoria" is also able not only to check the hard drive, but also to superficially eliminate the damaged sectors, and the second utility performs exclusively a recovery function.
Read-write test
However, producer software tends to be faster than bad blocks, sometimes a fair amount. This test is intended primarily for testing new disks and testing read / write. As the pattern is written to every available block, the device is effectively wiped off. For some devices, this will take a couple of days.
Programs for recovering the hard drive
More options you may want to consider. This test is for devices with pre-existing data. Non-destructive read-write test backs up the original sector contents before testing with one random pattern, and then restores the contents from backup... This is a one-pass test and is useful as general maintenance.
