XPost: alt.comp.os.windows-11   
   From: robin_listas@es.invalid   
      
   On 2025-02-16 14:39, 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 don't remember, but I investigated the issue at the time, and the   
   boxes I have are +R   
      
   There was a site that discussed the pros and cons of archival quality   
   DVDs [...] found them.   
      
      
      
      
      
   --   
   Cheers,   
           Carlos E.R.   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)