There are more than a few problems, the cause is difficult to break.
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In the meantime, here are some commands for troubleshooting :
It is a kind of electrical connection problem
The hard disk controller does not
The hard disk physically defective, you
The hard drive that you do not have electronic
There is a problem with the recording on the hard disk
CMOS settings are not properly September
There is a conflict with the IRQ settings
There is a conflict with the jumper settings
The reader will fail to start.
Fdisk reports wrong disk size when using more than 64GB.
First There is a certain type of electrical connection problem
Make sure the cable connections are correct.
Check that the connector 4 son who carries the power and make sure it is plugged in. This connector at one end and a taper can not be put in reverse.
Applied when first turned on the computer, the hard disk light is coming on shortly, which is a good indication that the drive is receiving power. Since the turn of the plate vibration and buzzing light check is whether the player is connected
Then check the data ribbon cable. This cable is showing a ribbon cable with a red rim or blue color, the position of pin 1. Some of these cables are caught with a small tab in the center of the edge connector. On many of the hard drive pin is the pin closest to the power connector, but not always, check the documentation of your hard disk or on this website available in hard drives and search for your model.
You can use the documentation on the hard disk on this page you will find it easy with the index on top of each page to find the manufacturer, then the page is a list of manufacturers who have links to each product and technical support documents. The former players are on different sides, and new CDs. If you find listed the page where the products of the manufacturer, at the top of the page for a link, the "old models" says, and you'll find the list here.
If all cables are properly connected and power is applied, you should be able to hear and to feel, to rotate the drive. If the CD does not run, turn off the device and try another outlet (perhaps that the CD-ROM is connected). If the CD does not work, then it is probably defective. * Refer to Step 3
Second The hard disk controller has failed
A controller error is usually displayed by an error on startup. Not much except that you can do to replace the hard disk. Check the hard disk error codes
Third The hard drive is not physically
There may be two signs of the disease.
2) The device is not rotating:
To solve this problem is necessary to physically access the drive while the computer is turned on. With the cover, looking at the device and find the page that has no components. Touch with the hand on the side and try to feel the rotation of the disc tray. A typical hard disk has a small amount of vibration and a slight hum.
3) The head of the hard disk crashed into the bowl
This rule makes the device sends strange noises, sometimes right and often repeated regularly. A typical hard disk has to be a gentle hum to them should be easy to identify the device difficult to listen only.
4) The hard drive failed electronic
This is indicated by an error message during the boot cycle computer. You can not do much in that other State then to replace the unit.
5) There is a problem with recording to the hard disk (read or write)
There are two conditions that can cause this problem.
The hard drive can be a sector on the disk.
This problem can be performing a program that is able to be identified unit testing hard surface. In Windows 95, you can find scandisk in Start / Programs / Accessories / System Tools folder. Another possibility is to use a utility such as Norton Utilities for surface exploration.
This problem can also see if you format the hard drive and it is stated that "bad sectors" are in the formatting. These bad sectors are typically registered as such by the format of the program and the team knows that I do not use, but more bad sectors can be created as the hard disk.
One or more files damaged by any method.
These problems occur or when the computer restarts unexpectedly after a crash or maybe a power failure. They are easy to fix and repair. Just run the ScanDisk program found in Start / Programs / Accessories / System Tools folder and allow the computer to improve the error.
After the repair, it is possible that one of the files were corrupted and useless now. It is impossible to determine which files are assigned in advance, but if you write the names of the files are displayed wrong during the scanning process of the disc may try to find the application that is downloaded and install the application.
7) CMOS settings are not set properly
Check the CMOS settings. These values must be required by the manufacturer's specified parameters.
The old equipment
These teams must go into the CMOS / BIOS at startup and change the settings by selecting a number from 1 to 48, by a number of type 1 or 2, or a selection of the "User Defined" and enter the settings manually hard drive "head", "cylinder", "SPT", "WP" and "LZ". These options can be on the hard disk manual, the manufacturer's website or on this page by searching for the company, then the model number of the disk are found.
After entering the parameters normally before exiting the BIOS and restart the computer.
The latest equipment
These teams can almost always you will find a selection that allows the computer to "automatically" find IDE hard style. There are two methods in use. First, you can select "Auto" in BIOS screen for drive C: D: E: or F:. After restarting the device is automatically detected. Second, certain types of BIOSes have a choice has called "Detect Hard Drive" that allows you to start a selection, a car, take the thing to find and gives you the ability to accept or reject the detected device. This process is repeated for each drive mappings and available CDE F.
Once more there is to the BIOS to save changes and restart the computer.
Is also very critical phase lead that can run the device LBA, but not be able to see all the data. This card comes into play with larger hard drives than 500 megabytes and is about the computer BIOS at boot time, and looked to get where you configure the hard disk.
"Bad LBA setting" symptoms:
The computer is on, but you get a lot of read errors
Windows comes sometimes, sometimes it crashes
You do not have the possibility of a shorter but larger files seem to
Scandisk can not solve problems
LBA in the BIOS settings is not correct. Most likely, in units with more than 528 MB, setting LBA is not activated. Enter the BIOS and enable LBA.
This can easily happen if the device is a computer and it works fine, but then the plate is changed. The old BIOS had LBA enabled, but no news. Once the device is installed, seems to be working, but you have the symptoms described above.
7) There is a conflict with the IRQ settings
a) Normally used on the primary hard disk controller, the interrupt request (IRQ) number 14, the hard disk C and D permits to work properly .. The secondary hard disk controller uses IRQ 15, which the E and F of hard disks are working properly.
What happens is, sometimes with another device, like a sound card IRQ 15 or use the default settings changed by the user. That makes the computer not to secondary hard disks Immediately after installation of this device with IRQ 15th The only way to solve this problem is to change the device to use a different IRQ.
b) Another problem may be used in device drivers for Windows 95 CD-ROM in the Autoexec.bat and Config.sys loaded at startup. If Windows 95 is a conflict with these drivers will run in compatibility mode MS-DOS. This can be displayed by selecting Control Panel / System / Performance / File System Control.
A normal installation of Windows 95 uses 32-bit file access. If there are conflicts, you will see that the system goes into compatibility mode MS-DOS. Sometimes this can be solved by the method to be here.
8) There is a conflict with the jumper settings
All IDE hard drives must be properly configured by jumpers on the hard disk. The manual for each unit of instruction for these parameters. Each unit can be used as master or slave. Since up to two drivers on each computer can separately for each controller can have one master and one slave.
A typical computer with 4 IDE drive parameters main channel, as the C drive (master) and D (slave), and the secondary channel as the E drive (master) and the F drive (slave).
The two drives, the first unit as the master and slave and the second as the secondary channel is configured to be ignored.
On the motherboard you need to enter the BIOS and can, in fact, enable or disable the store a secondary hard disk controller and the changes. So if your computer is equipped with two units and added two more before the new equipment must be recognized in the BIOS to activate the secondary IDE controller, save the changes and reboot.
9) The device can not start
To correct this condition, start the computer with a DOS boot diskette. After the computer starts with the drive tries to access the C: drive with the command default-directory
If the C: drive that works and you can see the list of directories, then you may be transferred to the boot disk with the controller to make the system files from the floppy drive of the following:
">sys a: c:
The file must be on the hard disk. If not, then you will find a floppy disk with the file or use another computer to copy the file to disk. You can also use the command.com file from the floppy to the letter ...
">copy a: \ command.com c: \ command.com
... The computer will ask you to check the operation.
Note: A unit must also be active boot partition before it can begin. This is done using FDISK.EXE (of course you should do this fdisk precautions that your device is useless if misused can take).
To the hard drive crashes when starting to solve and not the computer stops responding, turn off the computer and unplug the cable from the hard disk that connects to the motherboard. If you turn on the computer, at least one error message on the board is bad, and maybe get into the BIOS. Once in the BIOS you can select the type of hard disk to change to AUTO and turning off the computer and connect the drive to try again to see if it works now.
10) Fdisk reports wrong size for the use of hard drives over 64 GB
According to Microsoft Knowledge Base article Q263044, "If you will Fdisk.exe to partition a hard disk, use the greater than 64 GB (64 GB, or 68,719,476,736 bytes), Fdisk does not the exact size of the hard disk.
The size that Fdisk reports the total size of less than 64 GB hard drive, for example, if the physical drive is 70.3 GB (75,484,122,112 bytes), Fdisk reports the drive is 6.3 GB (6,764,579,840 bytes) in size. "
Hard disk error codes
In general, a hard disk failure is indicated by an error code when the computer starts.
1701 - hard drive failure. ... Zip codes of the BIOS
This error code displays the BIOS during startup of the computer when the hard drive fails.
It could also be a cable problem, as described above. IRQ conflicts and poor bridge could also cause this problem.
One possibility is that the CMOS battery is dead. This can be checked at boot time by entering the BIOS and set the configuration of the hard drive and reboot. If the disk disappears error, the battery is empty.
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