What if the hard drive goes wrong?

Common Fault One: the system does not recognize the hard drive

The system can not boot from the hard drive, boot from a disk can not enter the C disk, the use of the CMOS automatic monitoring function can not find the hard drive. Most of this fault occurs on the connection cable or IDE port, the hard disk itself failure is not possible, by reseating the hard drive cable or change the IDE port and cable, etc. to replace the test, you will quickly find fault. If the newly connected hard drive is not accepted, a common reason is the master and slave jumper on the hard disk, if an IDE hard drive cable is connected to two hard disk devices, it is necessary to know the master-slave relationship.

　　Common fault Two: hard drive cannot read or write or cannot recognize

This fault is usually caused by CMOS setup failure. The correct type of hard disk in CMOS directly affects the normal use of hard disk. Now the machine supports the "ideautodetect" function, can automatically detect the type of hard disk. When the hard disk type is wrong, sometimes it is impossible to start the system, sometimes it can start, but read and write errors occur. For example, the hard disk type in CMOS is less than the actual hard disk capacity, then the sectors behind the hard disk will be unable to read and write, and the individual partitions will be lost if they are multiple partition states. There is also an important cause of failure, because the current IDE supports the logical parameter type, the hard disk can be "Normal,lba,large" and so on, if the general mode of installation of data, and in the CMOS to other modes, then the hard disk read and write error, Because its mapping relationship has changed, it will not be able to read the original correct hard drive location.

　　Common failure Three: The system does not start
This type of failure is usually caused by the following four reasons:

1. Damage to the main boot program

2. Partition Table Damage

3. Partition valid bit error

4.DOS Boot file corrupted

Among them, the DOS boot file corruption is the simplest, with the boot disk boot, to the system to transfer a boot file can be. The main bootstrapper corruption and partition-effective bit corruption can generally also be enforced with FDISK/MBR override resolution. Partition table corruption is troublesome, because the partition is not recognized, the system will treat the hard disk as an unpartitioned bare disk, resulting in some software can not work.

There is also a form of partition table corruption, which I would like to call "Partition mapping", which shows the same partition as the active partition. The same includes file structure, content, partition capacity. If you change the content of the partition in any area, it will be reflected in another place, like the shadow of the map. I have encountered, 6.4G hard drive into 8.4G (map the 2G of C area). This problem is particularly embarrassing, this issue does not affect the use, not repair words will not be a problem, but to repair, Norton's Diskdoctor and Pqmagic have become a blind, the total size of the partition and hard disk is not consistent blind, full of no problem perfunctory you. To deal with this problem, only ghost cover and restore the partition table with Norton Rescue Disk.

　　Common failure Four: hard drive appears bad way

This is a shocking, people-fearing word. The recent IBM Word-of-mouth has also been the river. When you scan your hard disk with a disk scanner that comes with your system Windows system ScanDisk, System prompts that the hard drive may have bad, and then flashed a horror of blue, a small yellow square slowly stretching open, and then, on a box marked on a "B" ...

In fact, most of these bad ways are logically bad and can be repaired. There's no need to fix it. (It is said that the manufacturer has developed the Self-Test tool because it cannot stand the fact that half of the repaired hard drive is a good one.)

So, what should we do when such a problem arises?

Once you use "SCANDISK" to scan the hard drive, if the program prompts a bad way, first we should reuse the various brands of their own self-test program for a full scan. Note that the quick scan is not selected because it only detects about 90% of the problem. In order to reassure yourself, it is worthwhile to spend more time here.

If the result of the inspection is "successful repair", it can be determined that the logic is bad, you can clap your chest to catch a breath; if not, then there is no possibility of repair, if your hard disk is still in shelf life, then hurry up and replace it.