【 Weak current college 】 computer failure judgment (3)

The disk class failure
First, define an example
This means the disk class fault indicates that the two aspects: one is the hard drive, optical drives, floppy drives and media and other causes of failure; another is the impact on hard drives, optical drives, floppy disk drive access parts (such as motherboards, memory, etc.) caused by the fault.

Second, the possible failure phenomenon
1, hard disk drives
1) hard drive with the exception of sound, noise is large;
2) BIOS does not correctly recognize the hard drive, the hard drive light is constantly lit or unlit, hard work interfere with other drives, etc.
3) cannot partition or format, hard drive size is not correct, the hard disk has bad road, data loss, etc.;
4) logical drive letter missing or changed, and access to the hard drive times wrong;
5) protection of data on the hard drive fails;
6) third party software hard disk failures;
7) hard drive causing fault protection card.

2, floppy disk drive
1) floppy drive led is not lit, or permanent, floppy read-up sounds great;
Division 2) floppy disk, a floppy disk, you cannot eject or insert, etc.;
3) floppy disk cannot be formatted, floppy disk, a floppy drive cannot read the interference of other drives or devices or applications to work properly, etc.
4) on a floppy disk in the write file cannot read another floppy disk;
5) floppy drive letter missing or changed, to access the floppy drive times wrong;
6) floppy drive installation not in place.

3, disc drive
1) drive noise zoning larger, CD-ROM, disk, CD or DVD drive tray cannot eject or close the optical drive read disc capacity, poor, etc.;
2) drive letter of the lost or changed, the system does not detect DVD drive, etc.;
3) to access the CD drive when panic or an error, etc.;
4) CD media causing the optical drive is not working properly.

Third, the part may be involved
Hard drives, optical drives, floppy drives and their settings, disk interface on the motherboard, power supply, signal lines.

IV. judgments points/order
1. preparation before maintenance
1) disk data cable;
2) corresponding disk detection software;
3) virus checking software.

2. hard drives
1) environment check
A. check the hard drive:
A) hard disk ID jumper is correct, it should be connected to the cable position matches;
B) connection data drive line is connected or connected backwards;
C) hard drive connector if it is damaged or the hard creases. You can replace the connector checks;
D) hard drive connector type hard disk specifications requirements;
E) hard drive power is connected properly, there should not be too loose or not plugged into place.
B. drive Visual inspection:
A) hard drive circuit board components for deformation, discoloration, and fracture defect phenomenon;
B) hard drive power socket of the connected PIN is soldered or removal of welding phenomena;
C) is powered, hard drive post led is not illuminated or permanent; work led is properly glisten;
D) powered, listen to the hard drive operates the sound correctly, there should not be abnormal noise and the noise is too large.
C. check the power supply of the hard disk:
Whether a) supply voltage in the allowable range, fluctuation range is within the allowed range.

2) fault points
A. We recommend software minimum system under examination and to determine whether the symptoms disappear. By doing so you can exclude other drives or part of the hard disk access.
B. parameter and sets the check:
A) hard disk can be recognized properly, the system recognizes the hard disk parameters are correct; the BIOS on the IDE channel of transmission mode settings are correct (it is set to "auto");
B) display of hard disk capacity and actual formatted capacity is consistent with, and the actual match (note, nominal capacity is 1000 units of the callout, and BIOS and formatted capacity is displayed by 1024, between 3% to 5% of the gap. Other formatted capacity is generally less than the capacity is displayed in the BIOS). Hard disk capacity as system capabilities (such as with a key recovery), than the actual capacity of small, smaller values please see user manual instructions;
C) check the technical specifications of the current Board is supported by the technical specifications with a hard disk, such as a hard drive larger than 8GB support, on a high transmission rate of support, etc.;
C. hard drive logical structure check: reference start class failure judgment points in the relevant part.
A) check the partitions on the disks is healthy, the partition is active, whether to format, system file exists or complete;
B) will not be able to partition and format operation hard drive, in the absence of viruses, you should replace the hard drive. Replacement is still invalid, should check software minimum system hardware part is defective;
C) necessary to repair or initialization, or completely reinstall the operating system;
D. system environment and settings: refer to start class failure judgment points in the relevant part.
A) took note of the inspection system for viruses, especially a boot-virus (such as check KV3000/K command, or use MEM.EXE command, check);
B) check the operating system has no third-party disk management software running; Device Manager on the IDE channel settings are appropriate;
C) is opened not appropriate services. Here, the ATA drivers in some applications might be an exception, it is recommended that you uninstall it if after viewing the anomaly disappears;

E. hard disk performance checking:
A) when powered on, if the hard disk sounds abnormal, not working or not working properly, you should check if the power supply has askedProblem, the cable is faulty, BIOS settings are correct, and then consider the hard disk itself is faulty;
B) should use the appropriate hard drive manufacturers of hard disk utility to check the hard disk corruption or other possible fault;
F. for on the hard disk protection issues arising from the card, you should consider the following aspects:
A) installed hard disk protection card, you should be aware of the CMOS for virus warning off, the CMOS of mapped address set to do not use (disable), CMOS first boot device is set to LAN; optical drive and hard drive should be connected to different IDE data line.
B) If you forget the hard drive protection card administrator password for 1.0 ALT + 133, ALT + 144, ALT + 155, pop-up 10 groups (must use keypad), 3.0, enter the administrator password, I get a set of ENPQ data, and then dial 800, to get the password;
C) equipped with hard disk protection card machines, power on the phenomenon of red screen appears, you should use a dedicated tool program. Please see the relevant methods of the technical engineering communications;
D) for a boot disk, do not see some of the data disk, to check whether these data plate as the boot disk exclusive data disc; partition type is a bootable operating system recognition; in larger than 8 GB of hard drive, whether in 8GB established part of the boot disk of FAT16 partition (the boot disk support FAT16 file system); the boot disk is in the exclusive district of more than three;
E) hard disk protection card does protection function, to check whether the user has closed the hard disk protection feature to enable hard disk protection feature, you can enter the system before the press F4 to enable (prior should already be installed), if not, to Reseat the hard drive protection card. In Windows, you should check the driver software has been installed;
F) when restart with hard disk protection feature, the original system on the hard disk is not preserved, candidates of user original system is using a third-party software to partition. The current hard disk protection card can only be protected by the operating system comes with Fdisk to partition systems;
G) on a hard disk protection mode each time the restore, if not a graceful shutdown, but there have been many tips for disk scan, in administrator mode, joined in the Msdos.sys file autoscan = 0;
H) in the user mode, the phenomenon of garbled, need administrator mode run Setup.exe in the upgrade disc;

3 floppy disk drive
1) environment check
A. the diskette drive in certain cases, similar to the hard drive of the inspection method.
B. check the floppy drive:
A) connecting cable is installed properly, there should not be plugged in or plug in the back;
B) floppy drive connected location, with the value set in the BIOS conform thereto;
C) floppy drive power connection is correct.
C. floppy appearance inspection
A) floppy drive for foreign objects;
B) circuit boards and components for deformation, color, smell, etc.
D. the use of floppy disk media quality is poor;

2) fault points
A. check the floppy drive, software minimum system into the floppy drive, or remove a hard disk is checked after the judgment. And, if necessary, move out of out-of-the-box;
B. check similar to hard drive. But note: the BIOS on the floppy drive can read and write settings to allow or disallow;
C. check the floppy drive for reading and writing skills, their reading and writing checks, on the other hand is a floppy disk swap literacy checks that may have failed the floppy drive can write floppy in the floppy drive is a good read. If not, replace the floppy disk drive;
D. floppy
Most likely infected media, so the check, it is important to note that the virus check.

4. CD-ROM drive
1) environment check
A. check the optical drive:
A) CD ID jumper is correct, it should be connected to the cable position matches;
B) connection CDROM data cable is attached or connected backwards;
C) optical drive connector if it is damaged or the hard creases. You can replace the connector checks;
D) optical drive connector type optical drive specifications requirements;
E) optical drive power is connected properly, there should not be too loose or not plugged into place.
B. optical appearance of the check:
B) optical circuit board components for deformation, discoloration, and fracture defect phenomenon;
C) optical drive power socket of the connected PIN is soldered or removal of welding phenomena;
D) powered, optical drive post led is not illuminated or permanent; work led is properly glisten;
E) powered, to listen to the CD drive by running the sound correctly, there should be no abnormal noise and the noise is too large.

2) fault points
A. check the optical drive, replace the optical application software minimum system checks your hard disk. And, if necessary, move out of out-of-the-box. Check, using a bootable CD to boot to the optical drive of the preliminary examination. If you cannot properly read, then the software check minimum system. The first is the optical drive on;
B. check similar to hard drive;

C. CD-ROM drive performance check:
A) for the ability to read disk failure, first consider the effect of the antivirus software, and then use the random CD testing, such as fault recovery, repair, or replacement in accordance with user needs and the failure to deal with;
B) when necessary, through the Refresh CD formware check do not drive if symptoms disappear (e.g. because of the optical drive into a CD disc, causing the system is started for the first time, the optical industryFor normal, you can try this method);

D. operating system configuration check:
A) application of the operating system software can support the active CD drive technical specifications;
B) Device Manager settings are correct, the IDE channel settings are correct. Necessary to uninstall the optical drive driving cycle, so that the operating system to identify.

5. case
Case 1:
Problem description: Xiao Wang is a company of computer maintenance personnel, and Office machine for Lenovo's moon 2000 models, 13G hard disk, because a long time computer system and data is not maintained, the system up and running are slow, the c drive on the replication of critical data to drive d, the system after running Lenovo recovery software hides the partitions inside a Windows98SE to C disk. 10 minutes to the recovery is complete, restart normal again entered the Windows98 systems. After entering the system, however, found that the use of the extended partition PM Division lost large amounts of data are in the extended partition,? Xiao Wang awkward situation ...

Solution: first look at Lenovo machine instruction for random data, it is written, "may have on the PM's partition format does not support partitions with Fdisk ..." may be a system restore destroyed the original hard disk partition table, is there any way to solve this? post into MSDos or enter PM, a primary partitions and one extended partition does not have other partition information, then think of the software, enter the MSDos Diskman, run Diskman, first warned that the partition table is wrong, although still to hard drive Diskman recognition into two partitions, but it also has to redetect the partition table. Redetect the partition table is fully automatic and interactive two ways, choose the latter, Diskman began by-cylindrical test hard disk pre-existing partition table. It was a long time, the original three partitions including Lenovo system recovery software hidden backup partitions are detected, keep partition format, everything is normal.

Comments: user applications or users on the hard disk is partitioned off will cause a hard disk partition table errors encountered such problems do not worry, to analyze the cause of the problem, review the related information, such as software and the information that came with your computer, software or tools related to the settlement, if the hard disk works, related software or tool you know very little about, be sure to find the relevant information or to the person who asked.
Note: Diskman a hard disk partition table maintenance software that runs on MSDOS, environment, using the full Chinese graphic interface, without any support Chinese character system. To chart reveals the partition table of a detailed structure, supports mouse operation and support of large hard drive 8G above and UNIX, NTFS, partition, format, etc.

Case two:
Problem description: a user tianxi II 5311 models, users using random software NTICD-MakerPlus FileCD tools format of rewritable CDs while (BenQ CD-RW), progress rapidly to 100 percent, but no formatting is complete, forcibly close the dialog box does not close. Finally, the only end task. Hard drive with NTICD-MakerPlus burn, RIP and burn progress during the show, and prompts for burning the finished, will burn a good CD into your CD-ROM drive, prompt does not recognize the disc.

Solution: first consider is the plug-in NTICD-Maker FileCD software problems, software upgrade to V5.08 NTICD-Maker, V5.13, no solution, upgrading to V5.15 phenomenon remains the same, then see the version of FileCD and user original machine of FileCD version, as of version 2.0.10 follow-up is not erased disc capabilities have been improved. Consider other burning software, used NERO for testing (version V5.5.9.0), to use the software to perform a quick erased and then burn to disc, still occurs the above phenomenon. But SONY's CD-RW discs is not the problem.
Comments: erased disc and burn software and recorders have a great relationship, engineer in resolving issues can be considered from several angles.

Case 3:
Problem description: the optical drive of a user, the user has to purchase the CD drive, according to the user in the market to buy optical drive for testing, optical drive without any problems, test data, such as disk and VCD discs can be read properly, but returned home after installing CD, boot into the system, all placed in the CD drive letter of the disc in the drive are displayed only on CD-like tags. The user returns to your place of purchase to the CD-ROM installation to test machines, problems repetition.
Solution: after examination found that the optical drive data interface of a data line bending, causing the drive data does not identify.