<html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <body bgcolor="#FFFFFF" text="#000000"> <tt>Hi,</tt><tt> </tt><tt> </tt><tt>My first e-mail... my apologies if this is not the appropriate e-mail list.</tt><tt> </tt> <pre wrap="">My goal is to *write* from the guest OS to a CD or DVD reader/writer on my host system. Currently, the write operation is failing. I believe it is because the virtual CD-ROM device is set to be "readonly". Is it possible to write to a QEMU CDROM device and, if so, how? (The host machine's CD-ROM drive does support writing/burning.)</pre> <pre wrap="">I'm using the "virt-manager" GUI to start the virtual machine. Once started, the "qemu" command line from my virtual machine process includes the following, where the host's built-in CD reader/writer is "/dev/sr0". /usr/bin/qemu-system-x86_64 ... -drive file=/dev/sr0,if=none,id=drive-ide0-0-1,readonly=on,format=raw This obviously says that the device is "readonly". A snippet of XML from my virtual machine from the CDROM is: <domain type='kvm'> ... <devices> <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <source dev='/dev/sr0'/> <target dev='hdb' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> I've tried removing the <readonly/> tag from the above VM definition, and then running the VM, but the tag magically reappears in the VM definition when it runs. Also, the "virt-manager" GUI shows the CDROM device as having the option of "Readonly" being checked (and the GUI does not allow me to uncheck it.) Other details: * qemu version 2.1.3 on Fedora 21. * libvirt version 1.2.0.2 Thanks for any help or pointers you can provide, -- Steve </pre> </body> </html>