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It was probably read/write anyways, but this is just to double check. rw - this option mounts the drive as read/write.gid=1000 - this option makes the group with id 1000 the group owner of the drive.If you have more than one username on your system, run the command id and use the number after uid=. This is probably your username's id if you only have one username. uid=1000 - this option makes the user with id 1000 the owner of the drive.remount - remounts the drive over the same mount point with the same previous options.Try executing the following command in a terminal: sudo mount -o remount,uid=1000,gid=1000,rw /dev/sdc1 How can I change the owner and permission of this hard drive ? I/O size (minimum/optimal): 512 bytes / 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I have got an external hard disk TOSHIBA 1TB USB 3, the permission is always READ ONLY.įdisk -l (output) : Disk /dev/sda: 500.1 GB, 500107862016 bytesĢ55 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors