You don't use RAM disks with K3B. They are recognized as a fully functioning file system, independent of a CD/DVD writing program. They come already formatted with UDF, so you need the UDF support. I can't remember the exact package name, but search in Synaptic for UDF and install it. After that, when you insert on in the drive the device notifier should show it. It may have to be mounted depending on how you have external mount set. BTW does your drive support RAM disks. Most drives in the last couple of years now support all writable formats, but there's many that don't.
I have PClinux on a different partion of the same machine to WXP and nero works fine,so is not the hardware.
I did a lot of research on the web and it seems that no software,paid or free works.See http://www.techradar.com/news/computing/pc/6-of-the-best-media-burners-for-linux-635084 etc.
I tried a DVD-R blank disc,and k3b won't format that either.
No distro of Linux I have ever tried is any better.
I will see if UDF support will fix it,but when I use the RAM discs in WXP, I have to format them or they won't work.
DVD-R disks are
one time use disks. If you could format it, that would be the one time use, so the disk would be a
coaster.
DVD+RW can be formatted the same as
DVD-RAM disks, but again,
not with DVD burning apps. It's a totally
different type of format. If you are formatting and burning the DVD-RAM disks with Nero, you aren't doing it right. As
cyrwyn points out, DVD-RAM disks are supposed to be
random access disks used in the same manner as any other hard drive or USB stick drive. The only difference is that the writing is done in an optical drive.