Empêcher OS X de monter un volume au démarrage / Prevent OS X to mount a disk at startup

Prevent a partition from mounting in OS X

diskutil info /Volumes/disk-to-not-be-auto-mounted

Get 

Volume UUID:              EADFE3D8-33C0-3D52-8D66-E5EA0748F81D

vi  /etc/fstab


UUID=EADFE3D8-33C0-3D52-8D66-E5EA0748F81D none hfs rw,no auto