Bug#689528: please add virtio support for cdrom at install time

[Witold Baryluk <witold.baryluk@gmail.com>]

Package: debian-installer
Followup-For: Bug #689528

Dear Maintainer,

I encountered the same issue.

The kernel and initrd on the installer CD (unofficial one for Alpha
architecture), does detect attached drive (/dev/vda, and I did read it
using dd without issues, and it has correct content, dd | sha256sum is
same as of the iso file). It shows in dmesg too.

blkid in the shell shows the drive.

The issue is probably how the installer is scanning for drives.

If installer asks me to select a driver and device, and I use 'cdrom' or 'none',
then point it to '/dev/vda', the installer works perfectly.

Creating a symbolic link from /dev/sda or /dev/cdrom to point to /dev/vda
did not help tho.  (If I go via manual driver and device then just
confirm /dev/cdrom , it then accepts and reads it fine).

Cheers,
Witold