Problem with Gnomebaker or CDRecord

[Redefined Horizons <redefined.horizons@gmail.com>]

I was able to edit fstab and get Debian to recognize the new DVD/CD
writable drive that I installed this weekend. (I have no problem
reading a CD and copying files from a CD in the new drive to my hard
drive.)

However, when I try to use Gnomebaker to write to a blank CD-R, I get
the following error messages. Can anyone offer suggestions on what the
problem is and how I would fix it?

Thanks,

Scott Huey

Error Messages:

cdrecord: No write mode specified
cdrecord: assuming -tao mode
cdrecord: Future versions of cdrecord may have ddifferent drive
dependant defaults.
cdrecord: Continuing in 5 seconds...
cdrecord: Operation not permitted. WARNING: Cannot do mlockall.
cdrecord: WARNING: This causes a high risk of buffer underruns.
cdrecord: Operation not permitted. WARNING: Cannot set priority using
setpriority().
cdrecord: WARNING: This causes a high risk for buffer underruns.
scsidev: 'dev/hdd'