To the U disk inside the copy file on the prompt can not be copied, the disk is written to protect
1. It could be a virusThe 2. is that you do write protection with the software, you need to remove.3. is the computer installed protection software
You think first of all, to see whether you have to use the U disk to force to stop or suddenly pull out, or did not delete it safely, pull out the U diskU disk write protection in general on 3 cases. First: U disk above a small push to write protection switch, you write protection, which directly switch off. The second kind, you use write protection software to open the U disk write protection, this need to use software to lift. The third kind, U dish kind of virus, virus do drop write protection.First of all to see whether it is due to U disk virus, it is recommended to use USBKiller scanning, and then stubborn U disk virus, it can be detected, and you can download the first free scanIt is not a virus may damage when pulling out the question, or try self production
First, use the system's own disk check tool to check and fix file system errors.Then reformat it.
To the U disk inside the document, on the prompt can not be copied, you can follow the following steps for repair:1) into the "start running", enter the regedit to open the registry editor, the "HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionexplorerAdvancedFolderHiddenSHOWALL" branch, and then find the binary sub key "Checked value" in the right window, "Checked value" instead of "1 keys".2) in the tools folder options, select show all files and folders, so that you can show them.3 in the U disk will see four files, namely floder, destop, destop2 and autorun.inf, the four all deleted.4) after you find a hidden file RECYCLER in the U disk, delete this folder.5) find the [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsNTCurrentVersionWinlogon] branch and change the key value of the key of "Userinit" to "userinit.exe"".6) in the process, the current user name under the wuauserv.exe and svchost.exe end.7) enter the c:windowssystem32svchost directory (note that svchost is a folder, not a program) and delete all of this directory! This is done, the U disk pulled down and plug in, you can use it normally.
