U disk copy file failed to do

Unable to copy parameter incorrect issues are more than to the U disk, mobile phone, and other mobile storage copy files or replication process, a similar situation may be caused by the following reasons (the higher the probability, ranking the more forward):

The first: There is not enough space for the mobile disk, for example, if you need to copy 50M file size, then the mobile disk requires a minimum of 100M storage space, because most USB disk or removable disk nominal capacity and actual capacity discrepancy, nominal 2G u disk, in fact, the storage space only 1.8G or less Typical symptoms are small files can be copied and pasted, but once the file is large, such as more than 200M of files cannot be copied;

The second type: Removable disk partition table information corruption, such as no security removal hardware directly unplug u disk or Trojan virus infection, all have the potential to cause damage to the disk partition table information; steps to resolve:

The first step: Open "My Computer"--> on the removable disk on the right mouse button, select "Properties";

Step two: In the pop-up window, select the Tools tab--> Click on the "Check Disk" window under "Check out"--> pop-up. Click on the "Automatically fix file system error (A)" and "scan and attempt to restore bad sectors (N)" to--> "Start" ( S) "for inspection and repair;

Step three: After checking the repair, click "Defragment" under "defragmentation"--> in the pop-up "Disk Defragmenter", first click "Analysis"--> wait until the "analysis", then click "Defragment";

Step Fourth: After restarting the computer, see if the removable disk can copy the file;

The third type: front usb power supply is insufficient, some compatible desktops because the power quality is poor, may cause the front USB power supply is insufficient or the network pattern interference is serious, appears "cannot duplicate the parameter incorrect" the question, may try the U disk or other removable disks to switch to the chassis behind the USB socket to try;

The fourth type: Removable disk infection virus, currently popular many U disk virus, once infected with U disk virus, may cause the partition table information of removable disk abnormal, and can not be repaired by the system with the program, in this case, the first use of Jinshan poison PA or 360 security guards for disk scan antivirus, If the removable disk is also accessible, and can see the file, will be able to copy all the files on the removable disk, back to the hard drive to, and then open "My Computer"--> right click on the removable disk--> click "Format"--> select "Quick Format"; After formatting the disk , and then copy the backed-up files back to the mobile disk, and finally see if the question "cannot copy the parameters incorrectly" and "U disk cannot copy files" has been resolved.

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