"Media write-protected" resolution (for USB disk or removable hard drive)

Recently used U disk, suddenly can not be used normally, the new folder in the U disk, prompted the "Media write protection" can not create files, hurriedly online to find solutions. The result of the lookup is more comprehensive than the explanation:

Method One: Format

My Computer (right click)-Management-Disk Management-Select the right key to delete the U disk after the format (online method, this trick can certainly be used, but for the premise of no important data, formatting before the data will be all lost)

　Method Two: Modify the registration Form

1, open the registry Win+r (that is, start-run) type Regedit.exe

2. Enter the following catalogue

Hkey_local_machinesystemcurrentcontrolsetcontrolstoragedevicepolicies

If there is no storagedevicepolicies item, this item is established

3, establish a DWORD value named Writeprotect and make its value is 0

4, restart

The above is normal operation, but in the actual operation, doing such as the operation sometimes can not solve the problem of write protection.

To solve this problem, the author makes the following actions:

Method three: With U disk to restart the computer

1, reboot with a U disk restart, when the system reboots to U disk lights flash (if no hint lights, reference to the system desktop before), Unplug u disk

2, the system reboot after the insert U disk, u disk operation back to normal

The first method is impossible because I have all the useful information on my hard drive.

The second method tries to note that the storagedevicepolicies and Writeprotect values may not be available, and can be created directly. But there is no effect.

The third method, tried two times, is not good either.

Later on the Internet search, some people say this may be the problem of exfat format, so you want to use a number of ways to convert the exFAT format to NTFS, but with the convert command prompt is not allowed. Just want to use some tools to convert, PQ, too long, do not use it, I installed the machine is Win7 and WinXP dual system, I then entered the Win7, with Win7 under the Acronis Disk Director, into the program, the conversion options are too many, afraid of conversion wrong. is useless. It was later thought that you could try it with the command of CHKDSK.

So: Start-run--chkdsk C:/F (where "C:" is the letter, "/F" parameter must be added, without adding is not possible.) PS: Here's the C to replace the device you want to repair the letter, such as f disk, etc.

Do not know how long, I operate my u disk, unexpectedly good, no longer prompted the "Media write protection", and again, the chkdsk command executed, there are some hints of information. Shutdown, problem solving.