Re: Re: USB key and lost space

[Rodary Jacques <rodaryj@free.fr>]

"To erase the ISO 9660 superblock of debian-9.3.0-amd64-netinst.iso do

 

umount /dev/sde1

dd if=/dev/zero bs=2048 seek=16 count=4 conv=notrunc of=/dev/sde

 

But first make sure that /dev/sde is indeed the medium you want to erase."

I did that before the result is :

 

dd if=/dev/zero bs=2048 seek=16 count=4 conv=notrunc of=/dev/sde
dd: impossible d'ouvrir '/dev/sde': Système de fichiers accessible en lecture seulement

Same answer with fdisk cfdisk ...

Sorry