U disk cannot copy file what should I do?

When you copy a file from one letter to another or copy the file data from the hard disk to a removable disk, such as a USB disk, you are prompted to "Cannot copy: Data error cyclic redundancy check", resulting in the inability to copy files, as shown in the following illustration

1, if it is from a hard disk to copy to another letter of the letter error; Open My Computer--> on the letter (such as D disk) where the file is wrong, click the right mouse button--> Select "Properties"--> eject the Local disk (X:) Properties window and switch to the Tools tab > Click on the "Start Check (C)"--> pop-up window in the first project, check the "Automatically fix file system error (A)"--> click "Start"--> at this point if the system prompts "disk check cannot be performed," Because the disk check utility requires exclusive access to some of the Windows files on the disk ... ", click" Yes "--> and then restart the computer, the disk error check will be automatically checked and the error file is repaired;

2. "Disk defragmentation" for the wrong disk letter, click the Start menu--> Select All Programs--> the mouse to "accessories"--> point to "System Tools"--> Click Disk Defragmenter--> Select the wrong letter under volume. Click "Defragment"--> patiently wait for disk defragmentation to finish, restart your computer;

3, check the disk format is not uniform, if the source file is in the same letter as NTFS, but you need to save the copied disk format as FAT32, this can also cause "data error cyclic redundancy check" can not replicate the case; open "My Computer"--> the right mouse click Disk--> Select Property --> in the middle of the Properties window to see which format the disk is--> if two disks are not unified, refer to the "FAT32 to NTFS" article in this site to convert the FAT32 format of the disk format to NTFS

4, if it is copying files to a U disk or other removable disks error, the use of the above steps are ineffective, small series recommended the priority to use Jinshan poison PA, 360 security guards and other anti-virus software to the U disk Antivirus, if the antivirus also can not solve the "Data error cycle redundancy Check" problem, you need to disk and other removable disks to format the First, the U disk in all the data back out, and then the right mouse button click on the disk, select the "format"--> check "Quick Format"--> click "Start"--> until the format is completed, in the copy operation

Summary: U disk and other removable disks cause "Data Error cycle redundancy check" error prompts, the priority to use antivirus software for antivirus, is likely to be caused by virus Trojan infection.