On October 30, 2005 10:51, Tom wrote: > Billie Walsh wrote: ... > The only way to tell what you've got is after you've bought them > with a blank in your burner, 'cdrecord dev=ATA:1,1,0 --atip' > (preferably as root). > > As to burning, a good rule of thumb for data or audio CDr's is > not to exceed the lesser of 1/2 the rating of your burner, or the > media your using. EG, for 52x burner, 48x media.. burn at 24x max. > For important disks like install media, burn at 1/3, or 16x. > > 2.6.x kernels do not accept burning as user, unless they are > hacked to allow user into kernel space. Those hacks still don't > allow direct access to some kernel functions, an altho you might not > see the errors in a GUI, you are running a high risk of buffer > underruns, an a failed burn, or reading afterwards. ...
I've seen these bits of advice several times before. But I buy the cheapest disks I can find at Walmart (Memorex I think, never tried to find out who the manufacturer really is), burn at whatever k3b decides is the max speed, using a 2.6 kernel, as a regular user, and I have a 100% success rate, for CD-Rs, CD-RWs, DVD-Rs, DVD+Rs. Maybe it's the brand of drive that's important (possibly the amount of internal buffer memory). I do try to avoid having any other processes consuming significant resources during a burn, just to be on the safe side. I noticed on an older, slower computer when I was running other programs at the same time that the burnfree buffer underrun protection seems to work by writing blanks if the buffer does run dry. The music cds I made had dead spots (ie. no sound) at those points. But it still worked, other than that. -- Ron ronhd at users dot sourceforge dot net Opinions expressed here are all mine.
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