You will need
- recovery download utility;
- - bootable floppy under DOS.
Malfunction external hard disks can be divided into two categories. To the first, the most serious include mechanical breakdown and failure of elements of the control card. To fix these problems yourself is almost impossible. To repair will have to open the sealed housing of the disk, and this must be done in specially equipped premises of high class purity. The dust that is in the air the usual apartments, is enough to bring the drive down. So the self can be eliminated only malfunctions resulting from software failures.
Software failures occur more frequently mechanical and is usually associated with disruptions in the power supply. Failure may be lost proprietary information, as a result, the Winchester refuses to work. In a situation when the drive worked properly, but at some point began to falter, first, try to format it. For this it is best not to use the native tools of the OS, and Acronis Disk Director. Use full format, not quick. At fast only deletes the file headers, but they're not. Format it NTFS, it is more resilient to failures.
If normal formatting doesn't help, try low level. For example, handle the disc by the program Diskedit. The complexity of this operation is that it should be done from DOS. To boot your computer you will need a special bootable floppy or flash drive, her image you can find on the Internet. Working with Diskedit has its own nuances, so it's best to read the relevant articles on this topic.
A good option disk recovery after a serious failure is the use of special tools from the manufacturer's website of the hard drive. They allow low-level formatting to recover the service information. Run these tools are also made from DOS. Running the utility, find it in the menu line of the low level format writes zero or something similar. The data line format, after the end of the disk, most likely, will start to work properly.
Don't forget to check for a faulty cable, which drive is connected to the computer. Try to connect the hard drive to another USB port. The probability that the faulty connector is quite low, but still exists.
Advice 2: How to repair a Winchester
Winchester is one of the most important parts of any computer. It contains all the information that is usually very important and necessary to the user. In case of breakage of the Winchester the person may lose much more than ten times the cash value of the disc.
If the computer does not see the hard no apparent reason, the first thing do is unplug the computer from AC power and perform General cleaning inside the case, pay special attention to the adapters and connecting wires (cables). This is fairly common problem when dust accumulates in the connectors of cables, and certain parts cease to function. Winchester in this case is no exception. Remove it from the system unit, then carefully clean and dry each adapter and the input on the Winchester. Now connect it back and restart the computer.
If such cleaning does not work, again remove the hard drive, figured take a screwdriver and Unscrew the screws holding the cover on the drive and remove it. Check that there are no cracks, chips or other obvious damage on internal circuit. If outwardly all is in order, do a thorough cleaning of the inner parts of the hard drive and connect it to the computer on completion.
If the computer does not see the hard drive, regardless of whether or not there were any defects in the disk or not, go to the service center on repair of computers. Most likely, the repair will not be denied, and moreover he is likely to end in success, but be prepared for the fact that the cost of repair may be comparable to the cost of a new hard drive. For this reason, if the warranty has expired, and particularly important information on the hard drive are not available, think about whether the repair costs.
If you refused to repair, and info on the hard drive is important to you or the road, try to find Amateur specialists on the Internet. So, some programmers often offer help with data recovery from "dead" carriers. Of course, that's no guarantee of the reliability of this method, but if there's no other choice, you should try this method.