XPost: alt.comp.os.windows-11   
   From: rick@nospam.com   
      
   On 2/16/2025 8:39 AM, Daniel70 wrote:   
   > I've got a PVR who's HD is getting pretty full (90%+) with programs I'll   
   > want to watch some day ... so I was thinking about coping some of the   
   > 'Keeper' programs onto DVD which meant buying a spool of DVD's.... but   
   > then needed to check if I needed DVD-R or DVD+R disks. (It is DVD-R)   
   >   
   > Which got me thinking ...... What's the difference between DVD-R and   
   > DVD+R??   
   >   
   > (Note ... I'm not discussing R v RW, just the -/+.)   
   >   
   > Back in the day (70's/80's), I used to do some Digital work where 'they'   
   > talked about Positive Logic (Ones = +5V, Zeros = Zero volts) and   
   > Negative Logic (Ones = Zero Volts and Zeros = +5V or even Ones = -5V and   
   > Zeros = Zero Volts), so I can understand/accept that there are   
   > differences ..... but with DVDs??   
   >   
   > On a +R DVD, are the 'Ones' high points on the disk whilst on a -R DVD   
   > are the 'ones' the low points on the disk?? (Or, rather than 'highs' and   
   > 'lows', is it a case of the orientations of the 'North Poles' and 'South   
   > Poles' of the Domains??)   
      
   I haven't done a lot with DVD discs in years, but I agree with those who   
   say that if you are using modern equipment there is not a big difference   
   between them.  I had a slight preference for the +R, but usually based   
   purchase decisions on prices and deals.  I would normally look to spend   
   around 25 cents US per disc (100 for $25 was a good deal) but have no   
   idea what prices are like nowadays.   
      
   A far bigger issue in the old days was the brand of disc.  While I   
   eventually tended to buy Verbatim, I used several other brands at   
   different times, and there were a few like Magnavox that were pretty bad   
   and I tried to avoid them.  Nowadays, with external drives being so   
   cheap and having such large capacities, I rarely use DVDs and would   
   probably have to hunt around to find an external DVD drive if I needed   
   to create one.   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)