So I just took out my hundreds of CD-R and DVD-R backup discs over the years and did a test.
They are all stored in the same condition, no heating, no wetting, no pressing and no scratching.
All my CD-R discs from 2002 are readable, brand name doesn't matter. After 2006, I only used DVD-R discs.
50% of my CMC-based DVD+/-R discs are bad now, fortunately I only have less than 100 of them.
The TY-based and AZO-based discs are pretty good. Because I have a lot of them, I cannot test them all, but the sample size is 100, good enough for me.
Guess I have to use other DVD drives to read the bad discs, hopefully get something back.
They are all stored in the same condition, no heating, no wetting, no pressing and no scratching.
All my CD-R discs from 2002 are readable, brand name doesn't matter. After 2006, I only used DVD-R discs.
50% of my CMC-based DVD+/-R discs are bad now, fortunately I only have less than 100 of them.
The TY-based and AZO-based discs are pretty good. Because I have a lot of them, I cannot test them all, but the sample size is 100, good enough for me.
Guess I have to use other DVD drives to read the bad discs, hopefully get something back.
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