I have an Ubuntu 16.04 LTS desktop system that I use to rescue disk drives (using dd or ddrescue). Whenever I plug in a disk drive it is automatically mounted and shown in the file manager.
I don't want this because I am afraid of the disk to be rescued is modified by the mounting process. It is me who decides if and when that disk is mounted, and not some OS function.
Surprisingly I could not find a setting to deactivate the auto-mount function. Some solutions suggest to enter the affected partitions in /etc/fstab and disable mounting there, however as each disk drives to be rescued may have different partitions this is not going to work in my case.
How to fully disable the auto mount feature of Ubuntu?