The exponential learning curve roars steadily upwards!
Using my
favourite site, I downloaded the programme
cd-dvd speed as recommended and found that my 'Samsung' branded disks were in fact 'OPTODISK' disks with a reported 80-95% burn success rate, the same company's DVD+R and +RW disks being rated as 'coaster quality'. My '4.7GB' disks also showed as '4.38GB' capacity - huh!
It is certainly a jungle out there. Buyer beware! The prospect of using the massive 4.7(4.38??) for reliable data storage frightens me somewhat, 'cos when old Mother Hubbard goes to the DVD cupboard..........................