Voilà la réponse trouvée là: https://gitlab.gnome.org/GNOME/gparted/-/issues/63
Mike Fleetwood
@mfleetwo 10 juin 2019
Maintainer
We deliberately make GParted show just the ISO9660 image (file system) when written to the whole of a device, even if it contains embedded partitions, because:
1) ISO9660 is a file system itself. Any embedded partition is either using free space or sharing data with the ISO9660 file system. Multiple file systems. This can’t be edited without causing damage by any tool or library that we know of. GParted is a partition editing tool after all.
2) ISO9660 is designed as a read-only file system. genisoimage and mkisofs create new ISO9660 images from directory trees. Files can be added via appending extra sessions. How to make a USB stick with iso9660 filesystem writeable again? This is nothing like partition editing.
3) ISO9660 file systems are often written to read-only media, CD-ROMs and DVD-ROMs so can’t be edited anyway.
Il s’agit bien d’une décision délibérée.
