So I started getting this error today when trying to delete some files and load some new ones onto my Sansa MP3 player. It would tell me that the file system was read only. I tried a sudo chmod -R 777 but that didn’t work so off to google I went..
Finally found that by remounting the filesystem like this: sudo mount -o remount,rw /dev/sdd1 /media/~ it fixed it up in a jiffy. Well those are my paths and my device names so it would obviously be different for you but hopefully that helps
Now if this above solution does not fix your problem try to manually umount the mp3 player and then remount it with the following command options:
sudo mount -a -t vfat /dev/sde1 /media/~ -o user,exec,dev,suid,rw,umask=000
This solution will also work for USB flash drives that are being mounted with either root only write privileges or as read-only file systems
