How to format readonly file system - USB

Question

I'm trying to format a USB that is readonly. I've mistakenly removed the SecureAccess files and now the file system is readonly. I've tried some solutions like this:

Read only filesystem problem

But still no result. In proc/mounts file /dev/sdb is of type iso9660 ro.

Is there another solution I should try? Thanks.

Edited: After trying to format from disks I got the following error:

Error formatting disk
Error wiping device: Command-line `wipefs -a "/dev/sdb"' exited with non-zero exit status 1:
stdout: `5 bytes were erased at offset 0x8001 (iso9660)
they were: 43 44 30 30 31
'
stderr: `wipefs: error: /dev/sdb: probing initialization failed
' (udisks-error-quark, 0)

Answer 1

• I think it works to restore the USB drive to a standard storage device with mkusb

  If you run standard Ubuntu, you need an extra instruction to get the repository Universe. (Kubuntu, Lubuntu ... Xubuntu have the repository Universe activated automatically.)

  sudo add-apt-repository universe  # only for standard Ubuntu
  
  sudo add-apt-repository ppa:mkusb/ppa  # and press Enter
  sudo apt-get update
  sudo apt-get install mkusb mkusb-nox usb-pack-efi
  

  See these links for more details,

  • help.ubuntu.com/community/mkusb/

  • help.ubuntu.com/community/mkusb/wipe

• If there are still problems, I suggest that you try according to this link:

  • Can't format my usb drive. I have already tried ... Analysis of the problem

Answer 2

I found a solution. To format it:

sudo dd if=/dev/zero of=/dev/sd* 

in my case it was:

sudo dd if=/dev/zero of=/dev/sdb

It took some time. After that I format the USB using Disks.

Applied permissions:

sudo chmod 666 /dev/sd*

Mounted it using:

 sudo mount -o rw,users,umask=000  /dev/sd* /media/user/temp