|
There are three possibilities for USB flash drive to be write protected (provided the USB flash drive is not damaged):
1) hardware write protection
By the write-protect switch on the U disk write protection set, and some U disk next to a small slider, you can set it by sliding it to write protection, which is specifically designed for U disk anti-virus, but now many U The disk does not have this write-protect switch.
2) software write protection
Through the management tools for write-protection U disk, it may be that some of your installation has write-protection software, such write-protection U disk connected to the other computer should not write protection.
3) U disk in the virus, Trojans and other forced write protection
Trojan viruses are forced to change the write protection, modify the registration list, or modify the properties in DOS does not work.
If you check the U disk did not write protection switch, the computer is also not installed write-protection software and you have not set permissions on the U disk, then most likely is the virus, let's look at the virus Some cases.
U disk virus is write-protected
Double-click to open the U disk, suggesting that you need to format:
Select "Yes", but can not format, suggesting that the disk write-protected:
Right-click the U disk to check its properties and found that U disk space used, free space, capacity is 0, the following is the diagram:
U disk virus is write-protected how to do
Use normal anti-virus software killing, but not scanning any virus:
Use U disk antivirus experts (USBkiller) unregistered version of killing, you will find the same U disk, killing detected by USBKiller, will appear as shown:
Due to the wide range of USB flash drives and their malicious destruction of the system and properties of the USB flash drive, unregistered versions of the USB flash drive are known to us that the USB flash drive is forcibly write-protected due to a virus, so you want to completely remove the virus , U disk to solve the problem of write-protected, you must register, after a similar problem encountered, it can be easily resolved.
U disk antivirus experts (USBKiller) official download address: http://www.upanshadu.com/xiazai.html
More information on USB Killer (USBKiller) can be found at:
http://www.upanshadu.com |
