Most SD cards and some USB flash drives have small levers or switches on the casing that control whether the item is writable or read-only, so look for such a lever or switch and move it if necessary.  Especially in the case of SD cards, physical locks often prove to be insurmountable forms of write protection until they're disabled. If your lock mechanism has been broken, you might be able to fix it. Windows and Mac computers use different file systems by default (Windows uses NTFS which is unsupported by Mac), and many flash drives, external hard drives, and SD cards are pre-formatted for Windows use. If you're having trouble using your drive on a Mac computer after using it on a Windows computer, you can reformat the drive by doing the following:   Plug the drive into your Mac.  Change the drive's format to the "Mac OS Extended (Journaled)" format. You may get a write protection error if there is no more space on a drive on which you're trying to write. You can check this by selecting the drive in question in This PC (Windows) or Finder (Mac) and looking at the amount of space remaining on the drive. . A computer virus can change the way that your computer responds to removable storage items, or even render all of your USB items read-only. Running a virus scan should fix any virus-related problems that you're having. Formatting erases the removable item's contents and changes the file system depending on your selected formatting options. Since formatting the item will reset it, formatting should be your last option.

How would you rephrase that briefly using Vietnamese?
Kiểm tra khóa trên thiết bị lưu trữ. Đảm bảo bạn đang dùng hệ thống tập tin phù hợp. Kiểm tra xem bộ nhớ ngoài có bị đầy hay không. Chạy phần mềm diệt vi-rút trên máy tính. Định dạng USB hoặc đĩa CD.