On Wed, 27 Apr 2016 19:35:08 +0200
Didier Kryn <kryn@???> wrote:
> Le 27/04/2016 19:13, Steve Litt a écrit :
> > Not all filesystems have labels.  
>      For my information, could you list some? Every filesystem I ever 
> used to format disks had one (ext?, reiserfs, btrfs, vfat)
> 
>      Didier
You can make one with fdisk or cfdisk or parted or gparted or similar.
Just fail to include a label.
This isn't just a theoretical thing, lots of people don't label their
thumb drives. 
Another issue is a lot of thumb drives have the same label. I bet there
are millions with the label "backup".
SteveT
Steve Litt 
April 2016 featured book: Rapid Learning for the 21st Century
http://www.troubleshooters.com/rl21