Hard disk partition table and repair（硬盘坏道与分区表的修复）

Hard disk partition table and repair（硬盘坏道与分区表的修复） Hard disk partition table and repair(硬盘坏道与分区表的修 复) The zero track is in a very important position on the hard disk, and the master boot record area (MBR) of the hard disk is in this position. MBR is located in the 0 track 0 cylinder 1 sector of the hard disk, which stores the hard disk, the main boot program and the hard disk partition table. In a total of 512 bytes of hard disk master boot record sector, 446 bytes belong to the hard disk master boot program, and 64 bytes belong to the hard disk partition table (DPT), and two bytes (55 AA) belong to the end of the partition flag. Thus, once the zero track is damaged, the main boot program and partition table information of the disk will be seriously damaged, resulting in the hard disk can not bootstrap. Zero track damage belongs to one of the hard disk, but because its position is too important, so once destroyed, it will have serious consequences. The usual maintenance methods are to be fixed through the Pctools9.0's DE (disk editor) (or similar tools that can be used to edit disk sectors): Start with the Windows 9x boot disk and insert the CD containing the Pctools9.0. Run the PCT90 directory de.exe, first enter the "Options" menu, select "Configuration" (configuration) command, press the space key to remove Read Only (read only) in front of the hook (toggle press Tab), then save and exit. Then select and implement the main menu "Select" (select) in the Drive (drive), in "Drive type" (after the drive type) in Physical (physical), and press the space selected, then press "Tab" to switch to "Drives", select "Hard disk" (hard disk), finally, the selection of "OK" and press enter. After that, go back to the main menu and open the "Select" menu, when the "Partition Table" (partition table) will be selected and entered, and then the hard disk partition table information will appear. If the hard disk has two partitions, l partition is the C drive, hard disk partition is from the beginning of 0, 1 cylinder, Beginning Cylinder partition (starting cylinder) 0 to 1 can be. Quit after save. It should be noted that the important data on your hard disk is backed up before you modify it. Reboot, press Delete to go back to the CMOS settings, and select "IDE AUTO DETECT". You can see that the CYLS number is 1 lower than before, save the settings and exit. Re partition, format, you can save the hard drive. Note: because DE only the FAT16 hard disk partition, therefore, for the FAT32 hard disk partition, the Partition Master (PQ) disk tools, convert FAR32 to FAT16, and then carries on the treatment. In addition, some attempts have been made to modify the hard disk motor positioning system to change the zero track position and to adjust the distribution logic of the head by circuit adjustment, so as to re locate the zero track. Of course, this requires a deeper level of hardware, and it is more complicated to implement. Repair of partition table damage The main sector of the hard disk boot record is also where the virus focuses its attack. By breaking the DPT (partition table) in the main boot sector, you can easily destroy the hard disk partition information. The damage to the partition table is usually not physical damage, but the partition data is corrupted. So, usually, software can be used to fix it. Typically, it is highly advisable to backup a partition table to a floppy disk, CD, or USB disk after the hard disk partition. In this regard, the domestic well-known anti-virus software KV3000 series and rising has provided a complete solution. In addition, the corresponding repair methods are provided for hard disks that do not have a backup partition table, but the success rate is relatively low. In addition, Chinese disk tool DiskMan is expert in this area. Rebuilding partition tables as one of its "killer" features is ideal for repairing partition table corruption. For the hard disk partition table, it is severely damaged by the partition adjustment software (or virus), causing the hard disk and the system to be paralyzed. DiskMan can re create the partition table by booting the record information through the non destroyed partition. In the menu toolbar, select the rebuild partition table, and DiskMan begins to search and rebuild partitions. DiskMan will first search the hidden sector of the 0 cylinder 0 head starting from the 2 sector, looking for the partition table that has been moved by the virus. Next, search the first sector of each head. The search process can be done in two ways: "automatic" or "interactive". The automatic way preserves each partition found, and applies to most cases. Interactively, each partition of the discovery is prompted by the user's choice whether to retain it. When the partition table that is automatically rebuilt is not correct, you can interactively search again. However, it is important to note that.., Rebuilding the partition table function does not do one hundred percent of the repair partition tables unless you have previously backed up the partition table, and then restore the partition table corruption by restoring the previously backed partition table. Therefore, it is necessary to back up a partition table at ordinary times ******************************************************************************************** Repair of hard disk The most sensitive component of the computer should be hard. With the continuous progress of the manufacturing process, to change this situation, some hard disk manufacturers such as quantum also released new technologies, such as quantum seven generation began to use and development for reducing the impact force of the hard disk by SPS vibration protection system, in order to expect "hard body health". But the disadvantages of hard drives are not fundamentally changed. For love to chase the new personal computer users, the update frequency is generally no CPU hard disk or display card so fast - even to buy a new hard disk, the old disk also want to hang the play in the box, so people do not want to see the hard disk failure, especially the hard disk to save precious data when. Hard disk is a logical damage, it's too big to reinstall software, but the physical damage it? In fact, as long as the situation is not particularly serious, some methods can be used to solve the problem. First look at the hard disk has physical damage, but also have bad sectors after what phenomenon. 1. read a file or run a software often wrong, or take a long time to operate successfully, the hard disk and repeatedly reading a shrill noise, this phenomenon means that hard on some sector data have been bad. 2. the system can not boot through hard disk boot, after the floppy disk can be transferred to the hard disk drive, but can not enter the SYS command transmission system is not successful. This situation is serious, because it is likely that the boot sector of the hard disk has a problem. 3., the normal use of the computer, often blue screen without cause. As for the previous 3 cases, we generally have the means to remedy more or less. The following provides several methods for repairing bad sectors on the hard disk, it is important to note that priority should be given to methods in the front row. 1. start with the easiest way. Select the hard disk drive in Windows98 explorer, right-click the mouse, select "properties" in the pop-up menu, completely scan the hard disk in the "tools", and the possible bad clusters for automatic correction. For the above second situations that can not enter the Windows98, you can use the Windows98 boot disk boot machine, and type in "A:>" prompt "ScanDisk X" to scan the hard disk, where "X" is the hard disk drive. For bad clusters, the program is marked by "B" (bad) in the black background. 2. in fact, the first methods are often not effective, because the Windows98 of "bad sectors" auto repair is largely on the logical defects, and can automatically repair physical bad sectors, so it is necessary to consider the "cold treatment of these bad sectors". The so-called "cold treatment" is the marking in these sectors, not to use, but also afford Untouchables to hide. Remember the bad sectors in first ways, then the hard disk will have advanced format, into a region of bad sectors, then don't access the file in this area. That is, not to save hard disk space and the division too "economy", and should leave adequate room, because of bad sectors around the "good read road" is not wise, has spread of bad sectors, and if the use of bad sectors get too close to "good", so too how long, hard disk bad sectors will be the emergence of new. 3. use some software to process the hard disk, the most typical of which is PartitionMagic. Here to version 4 for example: scan the hard disk can be directly used in the PartitionMagic4 "check" command to complete the command, but no automatic repair function, so the best program in the PartitionMagic4 call Windows98 to finish this task. Mark the bad clusters, can try to re test it, select "Advanced/bad Sector is Retest" in the Operations menu; the bad clusters into one (or more) area, can consider the hidden, to prevent misoperation in Windows98, this function is through the Hide Partition menu item to achieve. We must pay special attention to, if not formatted directly will have bad cluster partition hidden, so the zoning district will be the follow-up letter due to change of some of the procedures and the letter of them can not run correctly, such as some shortcuts on the desktop software establishment will not be able to find the host program, The solution is to take advantage of the DriveMapper menu item under the Tools menu, which automatically collects shortcuts and related information in the registry, and makes correct changes to them. Specifically, in the newer version of the PartitionMagic5.0 Pro, DriveMapper has been upgraded to version 3, making the job more efficient and concise. In addition, the DiskManager software can do this work. The hidden partition, don't try to put the bad sectors of the partition before and after the merger -- it is useless, because the two partition is not continuous in physics. 4. for the hard disk sector 0 damage, looks more difficult, but not hopeless -- as long as the 0 sector of shielding scrap, instead on the line and the 1 sector, the ideal software to complete the work is Pctools9.0, specifically, is the Pctools9.0 DE tool, it is important to note that modifying the sector to complete after only on the hard disk as formatted to partition table information into 1 sectors (now as the 0 sector). 5. not to cannot but, it is best not to use that as low down on the hard disk. Because the price of the hard disk for at least two points: one is the harm of disc wear, two sectors of the hard disk, the price will accelerate the spread of bad sectors. 6. there is one final point, that is the related content BIOS motherboard to set properly, especially for the TX chipset motherboard level before, due to the ability to not automatically identify the hard disk size, often because of improper and hard impact, ranging from the hard drive cannot make the heavy, hard disk damage. The above describes the hard disk when there are physical damage solutions. But most of these methods are negative, at the expense of hard disk capacity. The hard disk has bad sectors, if not because of the aging problem, the usual inadequacies in the use of hard disk, such as too frequent, too little memory defragmentation that application software for hard disk access frequently etc.. Ignoring the dust protection of the hard disk will cause the hard disk head to cause mechanical trouble because of the difficulty of positioning. In addition, the CPU overclocking FSB increased, forcing the hard work for a long time in high voltage, will lead to failure, so usually use the hard drive also should be cautious for the best operation.