U disk write protection how to remove

The general cause of this phenomenon may be your u disk has a bad block or expansion of the U disk, your USB drive may be a cottage expansion upgrade, even with the flash chip may be black, if you want to use the normal, you must use your U disk Master control model corresponding to the U disc volume production tools for mass production operations, Let the mass production tool pick out the bad blocks to restore the available portions of your USB flash drive. Specific operations, please refer to the Digital home U disk type posts, must first see the U disk volume production process, and then use Chipgenius to measure your main control chip model, and then download the corresponding master model of the mass production tools, the last is the dosage of production tools to return the volume of U disk, pick out the bad block to restore the real capacity.

U disk write protection is generally divided into two kinds, one is the software write protection, one is the hardware write protection. Remove write protection from the following graphic methods:

First, software write protection. Remove the software write protection and need to change the policy.

1. On the U disk letter the right mouse button "Properties", and then select the "Hardware" tab.

2 Select a disk drive with USB in the list of all disk drives, and click the Properties button at the bottom right.

3 Click on the "Policy" tab in the open window. Change the policy to "optimize for performance". Determine if the write protection problem can be resolved.

If you think the above method is more cumbersome, you can use Usbmon software to remove write protection. Download Usbmon (Baidu can), first in the lower right corner of the "Security open disk Partition" under the select you want to cancel the protection of the U disk letter, and then in the bottom left bottom row select "Cancel write protection" on it.

Second, hardware write protection. Hardware write protection is relatively simple, the general U disk on all have physical switches, can be brushed away.