[Qemu-devel] [Bug 1155403] Re: virtio cdrom detected as hard disk

[Paolo Bonzini]

There's no such thing as a virtio-blk CD-ROM, only hard-disks. For
installation it shouldn't matter, since .iso images usually can work
also as hard-disk images (for putting them on a USB stick).

If you want to test installation from a "real" virtio CD-ROM, use
virtio-scsi:

-drive file=/path/to/file.iso,if=none,id=cd -device virtio-scsi-pci
-device scsi-cd,drive=cd

or

-drive file=/path/to/file.iso,if=none,media=cdrom,id=cd -device virtio-
scsi-pci -device scsi-disk,drive=cd


** Changed in: qemu
       Status: New => Invalid

** Changed in: qemu (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1155403

Title:
  virtio cdrom detected as hard disk

Status in QEMU:
  Invalid
Status in “qemu” package in Ubuntu:
  Invalid

Bug description:
  Trying to install Ubuntu or Debian using virtio to emulate the cdrom
  fails.  This appears to be due to the drive appearing to be a hard
  disk, rather than a cdrom, despite the media=cdrom argument to qemu.

  I'm not sure if this is a bug in qemu, or the kernel virtio driver?

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