General users' USB flash drives are in FAT32 format, so we need to convert the USB flash drive into NTFS format first, so the data from FAT32 to NTFS will not be lost, and users don't have to worry about data loss. The following method defaults the U disk to L: disk in the computer.
1, win+r enter cmd.exe (that is, start dos, which is in windows), or you can attach a command prompt.
2. use the convert command Note that the convert command cannot convert the current disk, so it can operate under any drive letter except l:. Take the d: disk directory as an example.
3. Enter the following command: convert l:/fs: NTFS/nosecurity/x.
Second, change the strategy
When the write protection problem occurs again after restarting, please do the following.
1. Select USB flash drive-Properties-Hardware.
2. Select Properties-Policy
3. Change strategy and optimize to improve performance.
Third, modify the registry.
1. Open the registry win+r and type regedit.exe.
2. Enter the following directory: HKEY _ Local _ Machine \ System \ Current Control Set \ Control \ Storage Device Policy.
If there is no StorageDevicePolicies project, please create it.
3. Create a Dword value named WriteProtect and set it to 0, and then restart.
The above is a routine operation, but in actual operation, the problem of write protection sometimes cannot be solved. In order to solve this problem, if you restart the system with a USB flash drive, unplug the USB flash drive and plug it in after the system restarts, the USB flash drive will return to normal operation.
Supplementary note: HKEY _ local _ machine \ system \ control set 002 \ control \ storage device policy in the registry; The WriteProtect value in HKEY _ local _ machine \ system \ control set 00 1 \ control \ storage device policy is also changed to 0.
Except the method of modifying the registry, both methods can only solve the write protection of the U disk, so please choose carefully.
U disk, full name of USB flash drive, English name of USB flash drive. [ 1]? It is a miniature high-capacity mobile storage product, which uses USB interface and does not need physical drive. Connect with computer through USB interface to realize plug and play.
The name of USB flash drive comes from a new storage device produced by Netac Technology, which is called "USB flash drive" and is connected by USB interface. After the USB flash drive is connected to the USB interface of the computer, the data of the USB flash drive can be exchanged with the computer.
However, the equipment with similar technology produced later, because Netac has registered the patent, can no longer be called "USB flash drive", but changed its name to "USB flash drive". [ 1]? Later, the name U disk was widely known because it was easy to remember, and it was one of the mobile storage devices. There are many USB flash drives that support multi-ports, that is, three-way USB flash drives (USB computer port, iOS Apple interface, Android interface).