Posts Tagged ‘drive controllers’
June 3rd, 2009 | 
Author: When a computer system is powered up, BIOS (Basic Input/Output System) is the first program (a firmware that is software on hardware) executed by a computer system. The BIOS detects, tests and initializes system devices like hard drives, optical drives, keyboard, display screen etc. After the BIOS check is over, computer system files take control to detect the hardware and software environment. Among all computer storage media, hard disk is the most common one due to its large storage capacity and cost-effectiveness. When the hard drive fails due to hardware issues, BIOS fails to detect it. This generally happens when hard disk suffers physical issues related to one or more of its internals. Attempting to run such failed hard drives can cause more damage to your data. So, if you ever encounter such issues, it is recommended to power down the system immediately and consult data recovery solution providers for recovering lost data.
The first function of BIOS is to run POST (Power-On Self Test) that is stored on a predetermined address in memory. This code is responsible to gather information of all attached drives including hard disk. It makes sure that all hardware is working properly and the minimum hardware required is available. Thus, if the hard drive is damaged, POST may not detect it.
In particular, BIOS may fail to recognize the hard drive post issues as physical crash. But, there can be other issues as well like:
• You have recently changed the BIOS settings and hard disk is not correctly configured.
• Hard disk is inappropriately connected to the system. Power cable or interface cable is damaged or not attached to the mainboard.
• Jumper settings are not correct.
• Hard drive controllers are disabled in BIOS.
To solve the issue, you need to follow these steps:
• Set your BIOS settings to default
• Verify all cables are in good condition and are properly connected
• Check jumper settings. If you have attached two hard drives to a port/connector, make sure that one of them is configured as master and other as slave
• Make sure that all/in-use hard disk controllers are enabled
• If the problem continues, you require a hard drive recovery company that has all the modern facilities and tools to recover lost data.
Data Recovery service incorporates cutting-edge technologies and tools that are intended to recover lost data. When you first send your failed hard drive to a recovery company, the recovery experts scrutinize it under safe and controlled lab environment of Clean Rooms. Based on such analysis, suitable recovery procedures are followed to recover optimum lost data. For example, if your hard disk is damaged due to read/write head crash, experts repair or replace it.
Stellar Information is industry’s leading provider of quality data recovery services. Stellar’s recovery experts work under state-of-the-art Class-100 Clean Rooms. The recovery solutions are available for almost all makes and models of hard drives (SCSI, SATA, EIDE and IDE), USB flash drives and SSDs (Solid State Drives: SATA). Stellar provides complete data recovery solutions for Server, RAID, SAN and NAS hard drives.
K madhav is a data recovery expert and doing research on data recovery software and hard drive recovery.
Article Source: What You Do When BIOS Fails to Detect Hard Drive
The reliability of modern computer devices is really high, but still we can find that failures emerge there from time to time. Such difficulties as the mistakes of technical personnel and users, computer viruses, errors in software and malfunction of basic hardware may be a cause of it. As an outcome, it is known that the failures occur with equal probability that is useful for doing hard drive recovery. Such companies as WizardRecovery may assist you to do it.
Errors of hardware
Difficulties with hardware devices as CPU, main memory, cables, hard disks and various controllers may cause data disappearance too. The absence of uninterrupted power supply and disconnections of power have also bad effect on your basic hardware. You will see that the consequences will depend on the condition of your personal computer at the time of the failure.
Difficulties with drive controllers
Failing of drive controllers is one more cause for the most situations of data loss. This is the case when controller is making recording procedure and ends it with error. As a result, drive system locations become damaged that caused the loss of the whole data or its part. Many contemporary drive controllers allow you to do diagnosis by means of protocols. This gives a possibility to detect dangerous signs before they cause a denial.
Disk mirroring
One of the means to avoid the loss of information is to utilize disk mirroring. It means that you will create a mirror image connecting 2 drives to one controller. One of the drives will be the main one and the other will duplicate the info that is situated on it. The role of the major disk will automatically transfer to the mirroring disk in case of data error. So there’ll be no any emergency interruption. But if software or a controller will fail the scheme of mirroring will be not effective. In fact, this technology may help you assure from such trouble as error of the hard drive of the mirroring pair.
The reliability will rise if every of the mirroring drive would be connected to its own controller. In this case the system will continue working with the failure of a drive controller as well. If you utilize Microsoft Windows NT or Novel NetWare operating system, you will find that they can create mirror drives programmatically. It is one more way for you to avoid undelete tools utilization.
Disk drives troubleshooting
Also we need to talk about the problems that occur inside disk devises. There are also may be found failures of electronic circuit that are situated inside and outside of the drive that are also terrible as mechanical defect. The loss of info can be induced by such errors too. It’s possible to recover data by means of easy substitution of the electronics within the disk.
We looked through a few examples of info loss and the methods of its recovering. Partition recovery isn’t a simple process, so you must try to protect your personal computer from it. WizardRecovery programs will always be ready to assist recover all your data.
The major field of activity of the company is data restoration. One of the proposals of the corporation is hard drive recovery soft. You can find a lot of information on the web source of the corporation. Our company will also help you receive disk recovery tools. You will find that the attendances of our company are the best ones.
Article Source: Info Recovery and Nowadays Soft
While not science fiction, the motherboard in your computer does have some similarities with the idea of a mother ship in old science fiction movies. The motherboard is the one piece of equipment in your computer that ties everything else together in a workable manner. It is the piece of the computer that allows all other computer components to receive power and to communicate with one another to deliver the desired result when you give the computer a command.
Motherboards have developed over the past twenty years from where they started when first created. Back then, the motherboard held little in the way of components. Floppy drive controllers and memory slots comprised just about all that a motherboard held. Now, motherboards boast a variety of features that have been built in and directly affect the capability of your computer to be upgraded. This capability is mandatory when considering the speed at which operating systems change and evolve as end users require more from the desktop and laptop computers.
The main purpose of the motherboard is to hold the computer’s microprocessor chip and then direct everything else connect to that chip. Everything that runs on your computer is either part of the motherboard or it plugs into the motherboard to be routed to the chip in order for it to be able to run.
The form factor, which is the shape and layout of the motherboard, affects where the components of your computer go and the shape of the computer’s case. Most motherboards use some form of standard form factors in order to fit into standard cases in computer models today.
While the form factor is important to the motherboard, it isn’t the only thing that controls how your computer works with the motherboard. The type of central processor your computer uses is determined by the socket for the microprocessor on the motherboard. The chipset, which is part of the logic system on a motherboard, connect the central processing unit to the rest of the computer. The BIOS chip controls the most basic checks on the computer every time you turn it on and does so from the motherboard. The real time clock chip maintains these basic settings and the time for the system.
Motherboards also contain slots for PCI, AGP, IDE, firewires, USB, and memory slots. Every one of these items requires a working motherboard in order to get power to run as expected by the end user. Each of these slots are necessary for computer operations to function in today’s world of internet and business applications. Without these vital functions built into the motherboard, the average user could not conduct meaningful business in the competitive aspect of today’s society.
New technologies are being added to motherboards all the time. They are not scary pieces of equipment to be avoided, but rather an integral part of your computer that enhances your computer using experience. It can be upgraded to fit your needs with little trouble and operates on a constant basis to deliver what you expect in your computer.
Victor Epand is an expert consultant for computer memory, PC supplies, and computer games. When shopping, we recommend the best online stores for PC supplies, Motherboards, computer memory, RAM, and used computer games.
Article Source: Secrets Of Your Computer’s Motherboard
During POST or Power On Self Test, computer BIOS attempts to get information regarding all of the devices attached to your computer system. After examining the processor and primary memory (RAM), it checks for the devices like hard drive, CD ROM etc and shows them with messages on screen like ‘Found Primary Master’ and ‘detecting IDE drives’ etc.
-> POST (Power On Self Test) is the first thing done by BIOS when your computer first boots up. POST is an in-built diagnostic program, which examines the hardware of your computer system to make sure that everything is available and working properly.
Many times, the BIOS of your computer just declines to recognize the hard drive, basically makes it unusable- there is no way in which your operating system will recognize the hard drive if BIOS can not. Let’s observe why all this happens.
The most frequent reason of this problem is a badly connected or loose data cable. You should first ensure that data cable is properly plugged in, both into the motherboard as well as the hard drive.
The same thing goes for the power cable, so you should check it as well. You should also make sure that red lines on data cable and the power cable are contiguous to one another.
Once you have ruled out the cable problems, you need to check out the jumper settings on hard drives. If two hard drives are attached to a port, ensure that one is set as masters and other as slave.
Next, ensure that the hard drive controllers on motherboard are not disabled. These hard drive controllers control the IDE devices and without them BIOS could not detect the hard drives.
If any of the above mentioned methods does not work, you need to search for a data recovery expert to cure your hard drive. It seems that hard drive has some internal problems, which can not be cured without opening it. And you are not recommended to open your hard drive at your own.
Data recovery experts are highly qualified and trained professionals, who know all ins and outs of the hard drive and are able to fix most of the physical hard drive problems. To ensure absolute and safe data recovery, always go for the experienced and reliable data recovery company.
Stellar Information Systems Limited is the most trustworthy and leading data Recovery Company, having more than 15 years of rich experience. Stellar’s personalized data recovery services is offered by highly trained data recovery specialists through Class 100 Clean Rooms.
Williamz Jack work as a freelancer and researcher of Data Recovery & File Recovery Software.
Article Source: What to Do When BIOS Does Not Recognize the Hard Drive?