u盤寫保護怎麼去掉

To remove the write protection from a USB flash drive, you can try the following steps:

1. Check if the USB drive has a physical write protection switch. If it does, slide the switch to the unlocked position.

2. Use diskpart command in Windows to remove the write protection:
```cmd
diskpart
list disk
select disk X (replace X with the disk number of your USB drive)
attributes disk clear readonly
```

3. Use Registry Editor to modify the WriteProtect key:
- Press Win + R, type "regedit" and press Enter.
- Navigate to "HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlStorageDevicePolicies".
- Double-click on the WriteProtect key and change the value to 0.

4. Use third-party software like HP USB Disk Storage Format Tool or EaseUS Partition Master to format the USB drive and remove the write protection.

Try these methods and see if they help in removing the write protection from your USB drive.