Hard Disk Bad Track soft Repair Method

Hard Disk Bad Track soft Repair Method

Bad hard drive channels (especially physical channels) are the most troublesome of all hard drive failures. If it is light, your machine will frequently crash, and the heavy data will make all your data useless. In the past, we generally only used low-level or hidden methods. However, the low level will have a certain impact on the hard drive's life; hiding will cause more bad sectors to spread, which is not a good method.

Now we can use HDD Regenerator Shell (hereinafter referred to as HDD) to easily fix bad sectors on the hard disk. HDD is a powerful hard disk repair software. It can help you repair physical damages (such as bad sectors) on the surface of a recycled disk, rather than hiding it! After the program is installed, it will help you create a boot disk, and then guide you to recover and regenerate the hard disk under DOS. The interface is simple and easy to operate!

For example, my GB kunteng hard drive is divided into two areas: C and D. There are a total of KB bad channels and they are distributed in multiple places. Due to bad sectors, I often crash when I turn on my computer, and the system is very unstable. It takes five hours to scan a full disk in windows, and a full scan is performed after an abnormal shutdown. In addition, bad sectors continue to spread. Later, I used HDD to repair the bad track and the computer was back to normal. Let's talk about bye-bye together with me.

Create a boot disk

After the download program is decompressed, run hddreg_v1.31.exe and install HDD as prompted. After running the program, click regeneration-> Create dikette and follow the prompts to insert a floppy disk to create a boot disk. (Note: The program can also run directly under Windows 98, the way is to click regeneration-> Start regeneration, the program will run under the MS-DOS of windows, however, it is recommended to run in pure dos for data security ).

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Figure 1

Scan Bad Sectors

After the computer is started with the boot disk, the program runs automatically (Note: Set the soft drive to the first boot in BIOS ). The program first detects the hard disk on your computer and asks you to select one hard disk to be repaired (if you have more than one hard disk). Then, click press enter and HDD starts scanning, HDD can be scanned from any location. If you know the location of the bad track in advance, you can enter the corresponding value and press enter (2), which saves a lot of time. If you want to stop scanning, click Ctrl + break at any time to exit the program.

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Figure 2

Repair bad track

After HDD scans the bad track, it will display the red "B" on the progress bar, and then it will start automatic repair. After the repair, it will be marked with the blue "R" (3 ). After scanning and fixing, the hard disk can be used normally.

Notes for use

1. If the hard drive has many bad channels and is scattered, it will take a long time for the HDD to be repaired. Please wait for six hours.

2. for data security, the restoration should be in pure dos. We strongly recommend that you back up data.

3. If the original data cannot be accessed due to a bad track, back up the original data immediately after the repair. Even if the hard disk is repaired, a new bad track may be generated.

4. unregistered users will stop running the program every time they find a bad track and fix it. If they want to fix it and run it again, this applies to users with fewer bad tracks.

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Figure 3

As a member of the storage device, the hard disk plays an extremely important role. However, because the hard disk is a magnetic medium, its life and stability are not as good as that of the memory and other devices, and various problems will inevitably occur during use. What makes the situation more complex is that, because the hard disk involves the underlying settings of the system, it is often difficult to solve the problem in Windows that everyone is familiar with. It must be transferred to dos for processing, this is a bit confusing for many new DIY users. After all, they have never experienced the DOS era.

General symptoms before hard disk Problems

If the hard disk fails, it is best to discover and take the correct measures as soon as possible. If the problem persists, the data on the hard disk will not be spared. In general, hard disks may have the following performance before they fail:

1. A prompt for the S. M. A. R. T fault is displayed. This is the function of automatic detection built into the hard disk by the hard disk manufacturer itself. This prompt indicates that your hard disk has potential physical faults and will soon become abnormal from time to time.

2. crashed during windows initialization. This situation is complicated. First, we should eliminate the possibility of other components having problems, such as poor memory quality, system overheating caused by fan shutdown, or virus damage. Finally, if it is determined that the hard disk is faulty, further processing.

3. You can enter the Windows system, but an error occurs while running the program. At the same time, you cannot run the disk scan. During the scan, the system often stops or even crashes. This may be a hard disk or a Windows Soft Fault that lasts for a long time. If the possibility of software configuration problems is ruled out, the hard disk may have a physical fault.

4. You can enter windows and run the disk scan program to directly find errors or even bad sectors. I will not say much about this. The windows check program will report the situation in detail.

5. The hard disk cannot be identified at all in the bios, or even if it can be identified, it cannot be found by the operating system. This is the most serious fault.

Unfortunately, the partition table is damaged.

First, we should confirm that the power interface and data line of the hard disk are not detached, and then enter the bios and use "HDD Auto Detect" to detect the hard disk. If the BIOS can correctly identify the hard disk at this time, at least you still have hope for treatment on the hard disk; otherwise, I don't think everyone needs to be busy, because our general diyer tool is basically powerless.

Search for the "55aa" string in ultraedit

After you boot the system with a CD or floppy disk, you can try to enter the drive letter C. If you are prompted that the drive C cannot be found at this time, it should be a good thing. In this case, the partition table information on the hard disk may be damaged or attacked by a virus. If your data on the hard disk does not matter, you can use the fdisk/MBR command to unconditionally clear the Partition Table content, and then use the partition software such as fdisk to re-partition and format the data, which can solve the problem; if you still need the data on the hard disk, the steps are troublesome. In this case, it is best to have a antivirus software or related software presented with the motherboard. Then you can refer to the help documentation. Generally, this software will contain commands for restoring the hard disk partition table, which is extremely convenient to use.

For users without a antivirus disk, you can use the NDD in nu 8.0 to fix the issue. It will check for errors in the partition table. If an error is found, NDD will ask if you want to modify it. You only need to answer yes continuously to correct the error, or overwrite it with the backed up partition table.

Use hide partition to implement

If the above method cannot be used, you can use fdisk to re-partition, but the partition size must be the same as the original partition. This is especially important. Do not perform advanced formatting after the partition, instead, use NDD to fix the vulnerability. This ensures that the hard disk can be started after it is repaired, and the data on the hard disk will not be lost.

Edge survival-Physical Bad Sectors of Hard Disks

If DOS can be switched to drive C, but the hard disk is not working properly, it is likely that the hard disk has a bad track. In general, Hard Drive bad sectors can be divided into logical and physical bad sectors. When a logical bad track is generated, it generally does not seriously affect the use, so it is likely to be a physical bad track.

The core idea of dealing with physical bad sectors is to separate these clusters with bad sectors into one partition and hide them to avoid other program calls. This will prevent the spread of bad sectors from causing greater losses. For this processing, we mainly use the partition magic6.0 DOS software.

After entering PQ 6.0 on the DOS interface, we first use the check for errors command under the operations menu to determine the location of the physical bad track, because this function of pq6.0 is very good, unlike Scandisk in Windows, it is often incorrectly diagnosed.

The real strength of pq6.0 is that it can mark all clusters with bad channels with special marks, and you can select all these bad clusters, then they are divided into independent new partitions. This is a graphical operation and is very convenient. Later, we should remember to hide this evil-filled partition so as to ensure that it will not be called. In this case, use the hide partition command under the advance menu.

With pq6.0, it is really difficult to solve Physical Bad Sectors, and it can effectively avoid the spread problem. However, in any case, the hard disk is already in sub-health status, and the data in the hard disk is still very dangerous. It is hard to say how much time this hard disk can use after processing Physical Bad Sectors with pq6.0. It depends on luck.

Low-level DOS Startup error-logical lock

Hard Disk logical lock is a common prank. After the logical lock is in place, no matter what device is used, the system cannot boot normally, or even a floppy disk, optical drive, or dual hard disk is useless.

To solve the logic lock problem, you must know the root cause of the problem. In fact, when the DOS system is started, it will search for the order of all logical disks. First, you need to find the partition table information of the primary boot sector. It is located at the place where the obeh address of the first sector of the hard disk starts with the zero head and zero cylinder, when the partition information starts at 80 h, it indicates that it is the primary boot partition, and the others are the extended partitions. The primary boot partition is defined as the Logical Disk Drive C, and then you can find the Logical Disk of the extended partition, disk D, and so on ...... The logical lock is here to modify the normal primary boot partition records and direct the first logical disk of the extended partition to itself. After dos finds the first Logical Disk at startup, searching for the next logical disk always finds itself, which forms an endless loop.

If you do not want the data on the hard disk, it will be very refreshing. You can set all ide interfaces to none in the bios, and then start the system with a floppy disk. At this time, the system will certainly start because there is no hard disk at all. Next, we will use the classic hard disk management software DM. Because DM does not rely on the motherboard BIOS to identify the hard disk, you can use DM for partitioning and formatting, which completely solves the problem and is safe and easy, the only pity is that data cannot be saved.

In addition, there is also a recommended method, which can save the data on the hard disk. First, prepare a boot disk, and then use the familiar binary editing tool (ultraedit) on a normal machine to modify the I/O on the floppy disk. sys File (remember to change the attribute of this file to normal before modification). Specifically, search for the first "55aa" string in this file and change it to any other value. With this modified system floppy disk, you can start with the locked hard disk. However, because the partition table on the hard disk has been damaged, you cannot use fdisk to delete or modify partitions. However, you can use the Partition Table restoration method described above.

Repair of hard disks damaged by 0 Channels

If the system prompts "track 0 bad" When formatting the hard disk, it means that the 0 track of the hard disk is damaged. In general, such faults are hard to be repaired, but we still don't have to give up, and there may be a glimmer of life.

In fact, zero track damage is also a bad track problem, but the key zero track also has a bad track. In this case, we need to re-mark the position of the 0 track. This work can be handed over to the pctools 9.0 toolkit, where we want to use the De. EXE command.