The master boot record MBR
Hard disk controller
The hard disk in the CMOS information
When the CMOS loses power or if an error occurs (generally prompts at startup "CMOS Checksum Error" or similar information), set the hard drive may be missing or incorrect, hard disk access does not work correctly. This situation we have to reformat the hard disk parameters, if you note the hard disk parameters in advance certain antivirus software or backup the CMOS information in advance, then you can simply retrieve manually; or you can also use the BIOS Setup (Setup) in the "automatically detect the hard disk type" (HD Type Auto Detection) function normally will get the correct result.
Not the problem
Our computer will often occur a thing that seem very wrong, in fact just frightens ourselves, and namely tugs head, move the jumper to lift a finger. Common makes you break out in a cold sweat in the hard disk bootstrap problems mainly in the following two ways:
System does not recognize the hard drive:
Such failures are the most common, when post completes prompted with the following error message:
HDD controller failure Press F1 to Resume
Reseat the hard drive power cable, data cable, or plug the data lines, replacing the other IDE port test.
CMOS error fault:
Drive not ready error Insert Boot Diskette in A
Press any key when ready...
The error described above occurred, belongs to the CMOS settings wrong CMOS information loss caused by caused by insufficient power supply.
The correct CMOS settings will directly affect the normal use of the hard disk. When hard drive type error is often read/write error occurred, in some cases, simply unable to boot the system. Like the hard disk in the CMOS type is less than the actual hard drive size, then the back of the hard drive sectors will not be able to read and write.
Reset CMOS reset or discharge data.
Hardware trouble shooting
Disk bad sectors repair:
The logical bad sectors repair
Other than Scandisk, there are a lot of good third-party repair tool, such as the NDD Norton Disk Doctor (Norton Disk Doctor) repair logical bad sectors of your hard disk and PCTOOLS is in good hands.
In addition, the hard drive manufacturers for factory hard drive series Disk Manager-specific procedures, more familiar with the circuit for the hard disk itself and the curing process and are easier to fix hard drive errors. Therefore suggested that everyone go download a copy of manufacturer's exclusive Disk Manager Program, easy to repair your hard drive.
The physical isolation of bad sectors
For appeared beyond repair bad clusters on your hard disk or physical bad sectors, we can use some disk software to separate it into a zone and hides, allows the head and not to read it, so you can keep your hard drive to a certain extent to extend the service life. Needs to be emphasized is that when you use a hard disk with bad sectors, must be data backup process, because there is a bad track on the hard drive after more bad road will come, so that despite its sympathy to the repositories that you left.
Zero tracks damage repair:
Enter NU 8.0 Toolkit directory, run the main program NORTON.EXE, then select "disk editor Diskedit" after successfully running selected "object Object", choose "partition table" after the starting sector of the hard disk sector 1 to 0 from 0 0 column 1 column 1 sectors. Also needs to be said is that changes value according to the specific case may be. Last exit to restart the computer after the file, simply use the Format command to format the hard disk.
Repaired track 0 with DE damaged hard drives
Hard drive repair Hard disk bad sectors repair strategy
Repair disk bad sectors
For the logical bad sectors, usually we use the operating system's tools and some dedicated hard disk checking tools can find and fix it. For example: Windows comes with Scandisk ScanDisk is most commonly used in hard disk logical bad sectors found tools and common Format command cannot be performed on any disk bad sectors repair role, we must understand this point. We may be in the Windows system environment, in "my computer" select the hard disk drive letter to process, select the "Properties" appears on the "Tools" button, select "check status", and then "scan type", select "full inspection" and the "automatically fix errors" on the "hook" and then "start". If the disk scan at system startup does not or cannot enter Windows system, we also use floppy or CD boot disk after you start the computer, in the appropriate drive letter, such as "a:" run Scandisk *: (Note: * hard disk drive you want to scan) and return later to repair the corresponding need to scan fixed hard disk partition.
However, if it is a hard disk physical bad sectors, then don't try to use these methods to repair, instead repeatedly with various tools to scan, is mandated by multiple read and write physical bad sectors on the hard drive will be more bad road, and diffusion, the correct method is to use the following way to decisively isolate where bad. This is a very difficult way, but a 20GB hard disk, if because of the bad road, blocking the 15GB, total 5 GB spaces are available, if you do not do so, and the end result was all scrap the entire hard drive.