Turns out Raring does not use UUID's here but /dev/sdXY names. That explains why it used to work (and silently the mint 16 system on sdb here has been using the swap of the hot-pluggable sda drive with trusty-based mint 17 on it...)
Turns out Raring does not use UUID's here but /dev/sdXY names. That explains why it used to work (and silently the mint 16 system on sdb here has been using the swap of the hot-pluggable sda drive with trusty-based mint 17 on it...)