No device for installation media was detected

[HariSekhon]

I'm finding with the Debian 11 installer that it is not finding the ISO DVD installation medium and I'm having to tell it via the installer context menu that the DVD device is /dev/vdb1, after which it boots.

You can reproduce this via:

git clone https://github.com/HariSekhon/Packer-templates pack

cd pack

make debian-tart-http

(http preseed.cfg is to work around issue #71)

Why does it detect the installation medium on other platforms such as x86_64 in VirtualBox but not on Tart?

Is it because the /vd[a-z] devices are less standard than /dev/sd[a-z] and not checked?

If so would it be possible to just have Tart present its devices as /dev/sda, /dev/sdb for simplicity and compatibility?