Cannot modify my USB Files/Folders

Question

This is my first post here, I hope that you guys can help. I connected my USB on my computer (Ubuntu), but I can't modify its folders/files. It says that I don't have enough permission. So I tried changing the mod with the terminal using

sudo chmod 777 /media/< USB NAME > 

but it returns that it's read only. When I put my USB on another OS it's the same! Please help! I want to be able to modify my USB contents on any OS.

Sorry, I would like to post images, but don't have enough reputation... But I can tell that mine is different than yours, it shows a warning sign, but I can see that it said that I might need two softwares: dosfstools and mtools, should I get them?

Answer 1

Open Gparted. Unmount your usb disk from gparted. Now repair your usb disk's partition.

[example: /dev/sdb1 not /dev/sdb. Repair partition not the disk].

From partition menu(P) and select unmount. Again From partition menu select check. Now apply.

Reinsert your usb disk.

Follow the Instruction: [edited]

Step1: unmount your disk [sudo umount /media/usbdisk] mount it with write permission [ sudo mount -o remount,rw '/meida/usbdisk'] Now try to format the disk.[use disk utility]

Step2: [If first step does not work then follow the following steps]
Open disk utility. also insert your usb disk. Unmount the volume(m)

Now Delete the partition(D)

Create a partition. Then mount it.