I have created a bootable USB flash drive via Ubuntu's Startup Disk Creator by following these instructions: https://tutorials.ubuntu.com/tutorial/tutorial-create-a-usb-stick-on-ubuntu#0
At 99% of the process it told me that the creation could not completed. No hint about what is going wrong. I used that USB stick for a bootable version of Ubuntu 18.04.
Now, I have an 8GB USB stick, without any device protection switch which I cannot format. The USB stick now keep formated as iso 9660.
I know that topic has been discussed a lot and in most cases it could solve by simple overriding the partitions with zeros. In my case nothing worked out what I tried.
For formatting back into FAT32 I tried following ways:
- by dd:
sudo dd if=/dev/zero of=/dev/sdf bs=2048 count=32(also with different byte size as well counts) - by mkusb (dus) => (https://help.ubuntu.com/community/mkusb/wipe)
- by:
sudo wipefs -a /dev/sdf - gparted also couldn't do anything
Everything I do ends up in something like, opening /dev/sdf': Read-only file system
I'm wondering that also root couldn't format it.
Any ideas how I can format my usb flash drive to a FAT formatted flash drive?
