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Without any warning of which I was aware, my Gnome environment changed so that I am no longer able to use the Gnome-supplied graphical tool for writing CDs. The CD drive has disappeared from the graphical "Computer" display; I now see only "File system" and "network." The Gnome-based "CD/DVD Creator" application that appears in the "Places" menu will only allow me to write to the disk drive, not to the CD drive.
Yes, I've considered the possibility that the CD drive is bad. Seems unlikely, though, because I can manually mount the drive with "mount -t iso9660 /dev/dvd /media" and the files on my CD-RW backup disk show up and are readable. Only, I can't write to the drive that way: the file system is marked read-only.
Since the CD drive is my backup mechanism, I now need to understand the command-line mechanisms for writing backup CDs. Obviously, I can't count on the Gnome environment. This is, like, the 12th or 13th time the environment has significantly changed on me without my knowing why. (Apparently it's related to yum updates. I update automatically from Fedora and from livna, which people tell me should be safe. It keeps on killing me. I'm totally pissed off.)
So -- I need the commands for mounting, from the bash shell command line, a DVD/RW drive in read-write mode to create a backup file system on the media in the drive. I need the commands for different types of media: I've currently got DVD-RW, CD-RW, and CD.R disks, and I'd like to be able to write to all of them.
PS: Fedora Core 8, on an Athlon-64 but running i386 versions of everything.