For now I got the right uuid from mac, but still do not work

I think I found the problem I am using the wrong uuid, How can I get the uuid of the usb disk from omega?

Followed this guide (more or less) but usb disk is not mounted at startup. Below my /etc/config/fstab

Thank you in advance for the help

config 'global'
option anon_swap '0'
option anon_mount '0'
option auto_swap '1'
option auto_mount '1'
option delay_root '5'
option check_fs '0'

config 'mount'
option target '/mnt/toshiba'
option uuid '76782325-b70f6f90-f306ef7f-4f600850'
option enabled '1'