>> Of course, you'll need some settings for this so it's not annoying if
>> people don't want to use it.  A simple tick box on that pop up dialog
>> allowing people to say "don't ask me again" would probably do.
>
> I would like something better than that.  "Don't ask me again" sucks
> when much, much later you want to be asked and you don't know how to get the 
> system to ask you.

Only if your UI design doesn't make it easy to discover how to add
devices another way, or turn this setting back on.

My thinking is that this actually won't be the primary way of adding
devices.  It's simply there for ease of use for end users, as an easy
way for them to discover that they can use external drives to backup
their system.

Once you have a backup drive configured, most of the time you're not
going to want to be prompted for other devices.  Users will generally
setup a single external drive for backups, and won't want prompting
every time they insert a USB thumb drive, a digital camera, phone,
etc.

So you need that initial prompt to make the feature discoverable, and
then an easy and obvious way to configure backup devices later.

>> You'd then need a second way to assign drives if the user changed
>> their mind.  I'm thinking this would be to load the software and
>> select a drive.  Mapping to physical slots would be tricky, I think
>> you'd be better with a simple view that simply names the type of
>> interface, the drive size, and shows any current disk labels.  It
>> would be relatively easy then to recognise the 80GB USB drive you've
>> just connected.
>
> Right, so do as I suggested: tell the user to remove the device if it's
> plugged in, then plug it in again.  That way you can known unambiguously
> (unless the user is doing this with more than one device at a time).

That's horrible from a users point of view though.  Possibly worth
having as a last resort, but I'd rather just let the user pick the
device.  This does have potential as a "help me find my device"
feature though.
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