Why can not the BIOS detect the really hard disk? .TXT

Must the household ever hear such a sentence: ten vehicle accidents and nine speedy, along with the laptop or computer also failed ten occasions and difficult drives nine times. Certainly, as the capacity of your tough disk becomes bigger plus the transmission price becomes higher and higher, but the volume on the challenging disk is receiving smaller sized and smaller sized, the capacity from the single disc is finding larger and higher, along with the speed can also be more rapidly and more rapidly (final year was nevertheless the globe of 5400 rpm) , This year has risen to 7200 rpm), needless to say, the probability of a really hard disk failure is also high. And the harm on the hard disk will not be as replaceable as other hardware, due to the fact the challenging disk usually retailers user's vital info. Once a severe irreparable failure occurs, the loss can't be estimated. As a result, currently I'll introduce to you the way to appropriately judge the failure from the really hard disk and cut down the loss to the minimum via clever repair.

　　 Under, let's have a look at the standard failures and repair solutions on the tough disk:

　　 1. Why does the BIOS not detect the tough disk?

　　If the BIOS can not automatically detect the really hard disk, you will discover usually the following four motives:

　　 ◆ The really hard disk will not be installed properly. At this time, the initial factor we have to do will be to verify no matter if the information cable and power cable on the hard disk are installed properly? Under standard situations, it may be caused by the fact that it has been inserted in to the corresponding position, however it just isn't properly placed. At this time, needless to say, the challenging disk cannot be detected.

　　 ◆ Jumper (jumper) is just not set properly. If your laptop or computer is equipped with dual hard drives, you have to set among them as the master difficult drive (Master) as well as the other as the slave tough drive (Slave), if both are set as master hard drives or both are set as slave really hard drives , You connect the two difficult disks for the IDE slot of your motherboard using a data cable, then the BIOS can not detect your really hard disk information and facts properly. It can be ideal to make use of two information cables to connect for the two IDE slots on the motherboard, so that you can make certain stable operation even if your tough disk interface rate is different.

　　 ◆ The difficult disk and CD-ROM are connected towards the very same IDE interface. In general, as long as we set it correctly, connecting the hard disk as well as the CD-ROM towards the exact same IDE interface will be okay, but there could possibly be some new CD-ROMs that can conflict with the old really hard disk, so it's safer to connect them separately.

　　 ◆ Physical harm for the difficult disk or IDE interface. When the really hard disk has been installed appropriately, and also the jumper is set properly, plus the CD-ROM just isn't connected for the identical IDE interface as the tough disk, however the BIOS nevertheless can not detect the difficult disk, then the greatest possibility is that the IDE interface may very well be faulty, you may try Try yet another IDE interface. If go to doesn't function, then I am afraid that your tough disk includes a challenge. You have to connect it to yet another pc to attempt it. If it may be properly identified, then the IDE interface is faulty. If it nonetheless cannot be recognized, It indicates that there is certainly an issue using the tough disk; you are able to also install it on your computer system with yet another new difficult disk or possibly a operating difficult disk. In the event the BIOS can't recognize it, it signifies that the IDE interface of your personal computer is faulty. If it can be identified, it indicates that the original tough disk does have malfunction.

　　 2. Realize typical tough disk failure information and facts ideas

　　 We are able to have an understanding of the popular tough disk failure information by way of the following table, in order that we are able to possess a clear heart when judging!

　　 The fault message prompts the precise meaning, causes, options

　　Nopartitionbootable No partition table The challenging disk is just not partitioned or the partition table data is lost (could possibly be caused by a virus). Antivirus initially, and after that use FDOS to re-partition immediately after executing FDISK command.

　　NOROMBASIC or PRESSKEYTOREBOOT can't obtain the boot system without setting the active partition (setactivepartition), usually do not rule out the trigger from the virus, initial kill the virus, then re-run FDISK and set the active partition.

　　Missingoperationsystem can not uncover the boot system tough disk is just not formatted or lost 3 key file systems Formatc:/s or 　sysc:

　　Non-systemdiskordisk Non-system disk or disk error Use non-system disk to boot Take away the floppy disk to boot together with the really hard disk or insert the method disk.

　　Badormissingcommandinterpreter or command.comisbadcommand.com file reading error or missing command.com file was deleted resulting from misuse, or virus damage. Copy the command.com file for the really hard disk, or basically use the SYSC: command to transfer the file. You are able to also use tools for instance NDD to repair.

corrupted canon cf card file missing .com, systemhalted failed to load command.com file is damaged or the version of command.com file just isn't compatible with boot technique. Recopy the file for the tough disk, but often antivirus is expected.　 DISKBOOTFAILURE challenging disk boot failure has numerous motives. It might be that the difficult disk features a challenge. Take the challenging disk to a further machine and attempt it. If almost everything is standard, it suggests that the motherboard IDE interface is faulty. three. The really hard disk cannot start out without any error message

　　 encountering this circumstance would be the most annoying issue, since it is actually difficult to judge the fault. We ordinarily make use of the replacement technique, initially use the DOS method disk to start from A:, soon after A:\\, variety C:\\ to switch to C: disk, if there is certainly an Invaliddrivespecification error message, it signifies that the tough disk MBR (master boot record) failure; InvalidmediatypereadingdriveC: error message seems immediately after DIR: the DBR (DOS boot record) failure of your hard disk; if the file name, size, date and also other info is usually displayed correctly right after applying the DIR command, indicating that the file is standard, please transfer the file inside the hard disk right away , And after that repartition and format it.

　　 four. The problem of crossed drive letters after installing dual really hard drives

Close friends who install dual tough drives often encounter the issue of drive letter crossover right after getting into Windows 98, especially when both difficult drives possess a master boot partition. At this time, you will find that Windows 98 may be the key boot partition on both challenging drives. Putting them with each other, and ordering other partitions in order, this causes the phenomenon that the drive letters are misaligned, causing inconvenience to our operation. That is due to the fact Windows 98 doesn't officially support dual difficult drives (Windows 2000 can be well supported, it's encouraged that good friends upgrade). The easiest way to resolve this problem is to enter the BIOS setup system, set the second difficult disk to NONE, and then enter Windows98 again, you will discover that the drive letter is misaligned, we can successfully access the two hard disks, make use of the sources in it, Of course, the author thinks that the best way would be to use Windows2000 method, let it automatically handle dual challenging drives, which is worry-free and protected.

　　 5. UltraATA/66 hard disk can not choose DMA selection

This really is truly not a tough fault, but can only be stated to become a soft fault, but the author normally encountered many buddies asking me for suggestions that the UltraATA/66 mode could not be turned on, which created the advanced difficult disk interface technologies unusable, which was a fantastic waste. method resource.

Here, we can discuss it in two instances: one particular is to use the Windows 2000 operating technique. If a tough drive that supports UltraATA/66 is installed inside the system, it is going to automatically make use of the UltraATA/66 mode devoid of any settings (the program has The default settings are set, provided that you enter the device manager window, double-click PrimaryIDEchannel under the IDEATA/ATAPI controller item to enter the home setting window, set the hard disk device type to automatic detection in the sophisticated settings tab, and set the transfer mode to DMA (If offered), set the SecondaryIDEchannel again, and after that restart it.); but for those who are applying Windows98, mainly because Windows98 doesn't help UltraATA/66, you must install a patch (this patch is commonly in In your motherboard driver CD), you'll be able to turn on DMA immediately after installation. But if you are making use of a motherboard with By means of chipset, the installation of By way of four-in-one driver is inevitable. Close friends can download the latest By means of four-in-one from the driver residence http://www.mydrivers.com A driver package, the newest version is now four.26, right after downloading is actually a compressed file in ZIP format, unzip it and come across Setup.exe in it to set up. However, the installation of this four-in-one driver is very difficult, which involves the issue of custom installation settings and also the separate installation with the IDEBUSMaster bus. In the event the installed system meets the following two circumstances, it may be stated that the UltraATA/66 mode has been turned on:

　　 ◆ The difficult disk data in Device Manager has been correctly identified.

　　 ◆ The DMA check box within the device manager is no longer visible. Also, you are able to set regardless of whether to open or close UltraATA/66 in the VIADMATool system. The VIADMATOOL system has taken over the UDMA device within the program.

　　 Normally, tough drives are typically not prone to failures, but after they seem, they're incalculable losses. Thus, I hope my close friends nevertheless pay focus to the backup and maintenance of your method, and at the very same time strengthen the virus monitoring to ensure the stability of your really hard disk for the greatest extent.