Just started doing some detailed scanning of media stash with my new crossflashed BenQ DW1640 (thanks negritude and Quikee ).
Looking at my Philips MBI DVDs (back from the days before I discovered Verbies and TY) has thrown up some very strange results.
Specifically, when I scanned one MBI DVD+R @ 16x, as the scan neared the end, the Jitter and PIF rates started to skyrocket as the scan went way into PO territory. This was prompted by an Advanced Disc Scan which showed similar results and labelled the disc Class 5.
The disc passed a BenQ TRT but the resulting speed graph was epileptic.
So as I began to think the disc had gone backside-up (as another MBI disc from the same archive had done about 6 months previously) I rechecked it in my Samsung drive and IIRC also my NEC/Optiarc, both Quality Scan and TRT.
And to my surprise, those tests didn’t agree with any of it!
For reference, this disc was most likely burned on an NEC 3550A at 16x and stock firmware.
I’ve ruled out a drive fault, as for example scanning Taiyo Yuden discs @ 8x has produced far more realistic results, (perfect trts, sensible qs graphs and Class 2 results from Advanced scanning), and also burns my Yudens as well as anything I’ve used before, so I’m wondering what to do with this MBI DVD and any others like it if any.
The main purpose for this disc is long term archival. Should I bin it or not?