hard disk is responsible for storing the data in the computer, so the hard disk is also one of the busiest hardware in the computer, but unfortunately although the task is huge, but today the hard disk still uses mechanical architecture, so Its response speed is far from the level of other hardware, and it has become the bottleneck of the performance of the whole computer. If your hard disk works very loudly, it means that the hard disk has already had serious hardware problems. Today, I will introduce you to the common hard disk. Faults and solutions.
Common fault one: Hard disk can not read or write or can not be recognized
This fault is generally caused by CMOS settings failure. The correct type of hard disk in CMOS directly affects the normal use of the hard disk. Today's machines support the "IDE Auto Detect" function, which automatically detects the type of hard drive. When the hard disk type is wrong, sometimes the system cannot be started, and sometimes it can be started, but a read/write error occurs. For example, if the hard disk type in CMOS is smaller than the actual hard disk capacity, the sectors behind the hard disk will not be able to be read or written. If it is in a multi-partition state, individual partitions will be lost. There is also an important cause of failure. Since the current IDE supports logical parameter types, the hard disk can be used with "Normal, LBA, Large", etc. If the data is installed in the normal mode, it is changed to other in CMOS. Mode, the hard disk read and write error will occur, because its mapping relationship has changed, it will not be able to read the original correct hard disk location.
Common fault 2: The system does not recognize the hard disk
The system can't boot from the hard disk, and it can't enter the C disk when booting from the A disk. The automatic monitoring function in CMOS can not find the existence of the hard disk. Most of these faults occur on the connection cable or the IDE port. The hard disk itself is unlikely to be faulty. You can quickly replace the fault by re-plugging the hard disk cable or changing the IDE port and cable. If the newly connected hard disk is not accepted, a common cause is the master-slave jumper on the hard disk. If two hard disk devices are connected to one IDE hard disk, it is necessary to distinguish the master-slave relationship.
Common fault 3: The system can't start
The fault is usually caused by the following four reasons:
1. The main bootloader is damaged
2. The partition table is damaged
3. Partition valid bit error
4. DOS boot file corruption
Among them, DOS boot file corruption is the easiest, after booting with the boot disk, transfer a boot file to the system. Master bootloader corruption and partition valid bit corruption can also be resolved with FDISK /MBR forced overwrite. Partition table corruption is more troublesome. Because the partition is not recognized, the system will treat the hard disk as an unpartitioned bare disk, thus causing some software to fail. But there is a simple way to —— use Windows 2000. Find a system with Windows 2000 and hang the damaged hard disk. After booting, Windows 2000 will scan the newly connected hard disk in order to ensure the stability of the system hardware. The Windows 2000 hard disk scanner CHKDSK has a good ability to repair hard disks damaged for various reasons. After the scan, the hard disk is basically repaired.
Partition table damage has a form, here I call it "partition mapping", the specific performance is that there is a partition like the active partition. The same includes file structure, content, and partition capacity. If the content of the partition is changed in any area, it will be reflected in another place, as if it were the shadow of the map. I have encountered it, the 6.4G hard drive becomes 8.4G (mapped 2G C area). This kind of problem is particularly embarrassing. This problem does not affect the use. If it is not repaired, it will not be a problem. However, when it is repaired, NORTON's DISKDOCTOR and PQMAGIC have become blind, and the total capacity of the partition and the actual size of the hard disk are inconsistent. Fill your mouth with no problem. To deal with this problem, only GHOST covers and restores the partition table with NORTON's rescue disk.