Ultra Speed CD-RW media and cdrecord

Doug Poland doug at polands.org
Tue Jan 4 21:03:14 PST 2005

On Tue, Jan 04, 2005 at 10:17:12PM -0600, Dan Nelson wrote:
> In the last episode (Jan 04), Doug Poland said:
> > My son gave me a package of Memorex Ultra Speed CD-RW blanks for
> > Christmas.  I was going to burn an ISO on my 5.3-STABLE system but
> > ran into a brick wall.
> > 
> > cdrecord tells me that it's "Trying to use ultra high speed medium on
> > improper writer." I've used "MultiSpeed 1x2x4x" media and "1x-4x
> > Compatible" media in the past with no problems.
> From a quick scan of the cdrecord source and some searches, it looks
> like Ultra Speed media require write speeds of 16x or faster, but your
> 2100S can only write CD-RW media at 10x (it can do CD-R's at 16x).  You
> can use the -force flag to make cdrecord write to the disks, but no
> guarantees. It'd be nice if cdrecrd's error message printed the limits
> of drive and media instead of just saying that something's "improper" :)
Thanks for the help.  I tried the -force switch and got lots of errors
and the disk didn't burn.  On a positive note, I suppose it's time for a
new CD writer!


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