Mobile hard drive does not recognize troubleshooting

With the sharing of files more and more, movies, picture games and other large-capacity data selected by the mobile hard disk as a storage carrier. Many netizens reflect, when they buy the mobile hard disk put on the computer, the system will be mobile hard disk recognized as "Unknown USB device", the mobile hard disk is not recognized, then the mobile hard disk will not be used, when this happens, you may wish to find the reason in the following order.

　　One, system-related setup installation issues

1, do not think as long as the motherboard has a USB interface can use the mobile hard disk, but also to see whether the system support. Windows2000, windowsxp and above version of the system can directly support the mobile hard drive, without the need to install a driver can be used, and the use of mobile hard disk under the Windows98 must install the driver, otherwise the system will be recognized as "Unknown USB device."

2, for some Windows98 users, after installing the driver of the mobile hard disk, you can view the mobile hard disk icon from Device Manager, but there is no corresponding drive letter flag in the explorer, this is caused by improper system setup.

　　Second, the motherboard USB interface problem

Due to a problem with the USB interface of the motherboard, the mobile hard drive does not work, mainly from the following aspects to solve:

1, USB interface is not open: on some old machines (including some brands) although there is an external USB interface, but in the BIOS is closed by default, so even if the system is not supported, so should check the BIOS settings in the USB interface option is turned on: When you start the computer, hold down the DEL key, Enter the BIOS settings and set onchip USB to "Enabled" in "Chipset Features Setup" or "Integrated peripherals" to save and restart your computer.

2, the system does not support USB interface: This situation is mainly in some old computers. such as a compatible machine, the motherboard is the flagship of the VISTA710V2, motherboard chipset with via Apollo MVP3, external USB interface card System is not recognized (installed Windows Me and Windows 2000 dual system), in the Device Manager can not find " Universal Serial Bus Controller ". A check on the Internet, originally motherboard chipset has a problem, hurriedly download the latest motherboard BIOS for refresh from the Internet, and download via special USB driver patch for the chipset, finally recognized the "Mobile storage Device" on my computer.

3, the USB interface power supply is insufficient: most of the mobile hard disk required for the normal operation of 5V voltage, 0.5A current can be directly through the motherboard USB interface supply, but some motherboard USB interface power supply does not reach this value, resulting in the mobile hard drive can not be recognized by the system. Fortunately, the special USB cable on the mobile HDD box has a PS/2 connector, so long as the connector is plugged into the PS/2 interface of the motherboard.

　　Third, improper operation causes the mobile hard disk cannot be used

Due to improper operation of the mobile hard drive can not be used, mainly refers to plug and unplug the timing of the mobile hard disk is not well mastered.

1. It is best to close the various applications that are running before plugging in the removable hard drive, and do not plug in during the system boot-up process.

2, the mobile hard disk will have a system recognition disk, read the process of the disk, before the end of the process is best not to do anything (recommended to the mobile hard disk sub-areas, the more the area, the system is more time to recognize the disk), to wait until the work of the mobile hard disk light stabilized to start operation.

3, the use of mobile hard disk will also appear in the past can be used, and occasionally can not use the situation, when this situation may be "system equipment" in the "Unknown USB device" Delete, then unplug the mobile hard disk, and then restart the system, and then the mobile hard drive connected, the fault can be resolved in general.

　　Four, the Windows version is too low

For some friends who are still using Windows 95 or Windows 97 systems, even if the computer is equipped with a USB interface, but because the operating system before Windows 98 does not support USB peripherals, install the driver anyway, Setting the CMOS parameter does not allow the mobile drive to work properly. In this case, one solution is to upgrade the operating system to Windows 98 or more, and the other way is to download the appropriate patches at Microsoft's official site to allow Windows 95/97 to recognize the removable hard drive.

　　Five, the problem of mobile hard disk itself

If the above failure reasons are excluded, the mobile hard disk still can not be used, it is likely that the mobile drive itself has a problem. The structure of the mobile hard disk is relatively simple, mainly by the hard disk box and laptop hard disk, hard disk box is generally not bad, the problem is mostly the laptop hard drive. In order to avoid the hardware damage of mobile hard disk itself, we should pay attention to the following aspects in use:

1, the mobile hard disk should be placed in a stable place, do not move when it is reading and writing to be shaken.

2, in the removal of the mobile hard disk to be strictly in accordance with the procedures: when the hard disk is not read, double-click on the taskbar in the lower right corner of the "unplug or eject Hardware" icon, in the window that appears, "stop" the use of the device, and then remove the device from the System option, and then unplug the drive from the Otherwise it is very easy to damage the laptop hard drive).

3, even in the non-working state, vibration is the biggest killer of mobile hard disk, which requires users to take a mobile hard drive out of the way to adopt effective damping measures (some brands of mobile hard disk in this regard do better, the device itself has taken the anti-vibration measures), it is best to put it in a plastic bubble around the box.

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