ok i bought some TDK dvd+r disks (TDK 003) in mid april they burned ok but with pretty bad quality scans but read ok at the time
they were all burnt with a pioneer 215 or sammy 203
but now pretty much all of the 60 odd i used are unreadable in any writer apart from a samsung sh-s223 which can read most of them quite easily although the oldest burns it cannot , the writers that cannot read the discs and in most cases fail to even recognise them are the pioneer 215 an optiarc 7200s also a 7170s and a lite-on SHM-165S6S
so a couple of questions
firstly why can the Samsung read most of them when the other struggle to even recognise them??
secondly what the hell has happened to the discs for them to degrade so quickly
for reference here’s a scan of a disc about 1 month old (burned with pioneer 215)
and here is a freshly burned 1 , burned with an optiarc 7200s