http://sharadchhetri.com/2013/12/19/how-to-fix-read-only-usb-pen-drive-in-ubuntu/
To fix USB Pen Drive read Ubuntu,follow the given below steps
Step 1: Enter root
sudo su
Step 2:run the df -Th view.
[Email protected]5437:/home/wj# DF-thfilesystem Type Size used Avail use%mounted Onudev Devtmpfs1.9G4.0K1.9G1% /Devtmpfs Tmpfs 387M1.6M385M1% /Run/dev/sda3 ext4 127G 51G 70G the% /None Tmpfs4.0K0 4.0K0%/sys/fs/Cgroupnone Tmpfs5.0M 0 5.0M 0%/run/LockNone Tmpfs1.9G 156K1.9G1%/run/shmnone tmpfs 100M 36K 100M1%/run/User/DEV/SDB1 VFAT 15G5.4G9.2GPanax Notoginseng%/media/wj/6ea0-b99c
Step 3: Find the U-disk [/dev/sdb1 vfat 15G 5.4G 9.2G 37%/media/wj/6ea0-b99c (installation directory)]
Install the USB drive automatically in the uninstall directory.
umount/media/wj/6ea0-b99c
Step 4: USB drive Filesystem in/DEV/SDB1 partition, now we will run the DOSFSCK command to check and repair the file system.
Dosfsck-a/DEV/SDB1
Can be used successfully, end ...
Ubuntu system: Insert USB Read-only File system