> Still need a better way of displaying the long disk UUID.

Ok.  So there is a longstanding request for word-wrapping in these
messages, but that requires per-theme changes and is not straightforward
to implement; I don't expect this to be resolved any time soon.

The other options are:
 - change the message in cryptsetup to only display the target name, not the 
source device.  This might be ok; both are unique, so showing just the target 
name should be enough to let the user tell their devices apart.
 - use a different source name in /etc/crypttab, instead of the UUID.  This 
would require an installer change.  It also should really be something stable 
and unique - it's ok to *display* a misleading name (like "/dev/sda2") when 
your devices have gotten mixed up, but the real problem is that if the device 
name isn't stable, cryptsetup won't be able to *access* the device.

For my part, on a system installed before ubiquity supported LUKS, I
just have /etc/crypttab configured to use /dev/sda2 as the source device
instead of referencing it by UUID... with only one internal disk, this
name is plenty stable in my case.  But we couldn't do that for the
general case.

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https://bugs.launchpad.net/bugs/1205054

Title:
  Unpolished prompt for encrypted-disk passphrase

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