I / O error and its elimination

In Microsoft operating systems , an I / O error on the device means that a particular system has difficulties with reading or saving information on the storage device. If it's a flash drive, then this message appears while using it with a card reader or when you try to access a file. Often an I / O error indicates that the device needs to be replaced. However, you can try to reanimate your data and even restore the drive to life.

Let's see first why this happens. Damage to the USB flash drive or disk can result from mechanical impact (eg, drop, shock, etc.). If you insert or remove the card incorrectly, carefully inspect it for obvious defects in the contact group or housing. It often happens that if the shell is repaired, the card starts to work again. Then you can return the information. After that, you should get rid of a defective drive. This will allow you to prevent repeated loss of data.

A disk I / O error may also occur due to a corrupted file system. This happens when the drive is removed without using a security function, and when power is lost during data transmission. As an example, imagine the situation that you are photographing someone, and at that moment the battery is completely discharged. In this case, there is a high probability of a memory card failure. In order to restore the file system, try typing "chkdsk (device letter): / r" on the command line. It is very important to write down all the data that the computer is able to read on the work drive.

Another I / O error may appear due to the incorrect operation of the card reader. It is better to use universal devices that are able to support several formats. To exclude the reason for the failure of this particular equipment, check if there are any broken fragments inside the flash drive. Another thing worth paying attention to the integrity of the cable.

The next reason that I / O error often occurs is the incompatibility of information transfer. In the late nineties, most computers supported access technology, which is called DMA. If your machine will try to use it for legacy versions of USB flash drives that support only PIO mode, an error-input-output will certainly appear. This will also happen when the Compact Flash drive standard is used. It is not allowed to connect the card reader to the ATA controller in your computer.

To remove all these errors, go to the "device manager", where you need to find the section with the controller, which contains the card with an error. Click the Advanced Settings tab, find the option to enable DMA mode and remove the marker from it. This will enable the controller to operate in PIO mode. Here, in principle, and all the cases when your computer or laptop can give such a mistake. Follow all the recommendations and everything will be in order.