[SOLVED] Can't reformat btrfs USB drive

[koper89]

Quote: Optionally if gparted can't delete the partitions, you could use dd to clear the device.

Type sudo bash in the terminal of gparted.

Type in dd if=/dev/zero of=/dev/sda bs=4k conv=notrunc

And replace sda with whatever the gparted software shows it as being, sdb, sdf, sdz, etc.

Source: http://superuser.com/questions/612964/installed-ubuntu-on-usb-drive-now-its-read-only-and-cant-be-formatted