Re: [Qemu-devel] [PATCH 0/3] Drop default SD card creation

[Paul Brook]

> One way is to treat the SD card as a hot-pluggable device.  A card
> reader device model provides a connector for the SD card device model.
> The SD card device model is backed by a block backend, with
> non-removable medium.  Card change is device hot plug.
>... 
> Note that we could model floppies and CD-ROMs that way, too.

That's a good point.  e.g. for a cdrom I'm pretty sure there's a bit somewhere 
that tells you whether it's a pressed cd or a cd-r.  Attaching this 
information to a cdrom-disk device (hotplugged into a cdrom-drive) seems to 
make sense.

Paul