Using SCSI emulation, I can mount an existing cd: mount /dev/sr0 /mnt I can also blank the cd-rw by: cdrecord -blank all -dev=0,0 Now I want to make a file system as: mkfs /dev/sr0, but it failed. My next intended action is to mount it so that I can write files on to it. So looks like I cannot treat the cd-w as a floppy disk? Comments are appreciated. Jinsong