I use the Ubuntu system, often use the U disk to transfer files, recently do not know why, the U disk in window can be used normally, but to the Linux file becomes a read-only aspect, can not be copied, pasted. Internet search, the discovery method is relatively simple, after the change, become more practical. So write it down. For everyone to share.
It is a good idea to execute the following command under the root user:
(1) execute this command first tail-f/var/log/syslog
(2) re-insert the U-disk (The U-disk with read-only file permission)
(3) fdisk-l
From the above can be seen on the USB stick mounted file system is /DEV/SDC1 , My computer is a dual system, different computers may not be the same. This command is still more commonly used, you can know some information about the system hard disk.
(4) on the U-disk, you can view the path of the U-disk through the properties
umount/media/cjl/uui #############CJL is my username, UUI is the name of my U-disk
(5) sudo dosfsck-v-a/dev/sdc1
After testing, after the above 5 steps, solve the problem.
U-Disk solution for file read-only mode under Linux system