> M-DISC – DVD/Blu-ray compatible discs
citation needed. My DVD/Blu-ray writer does not support M-DISC
> may last up to 1000 years
or may not. Who knows ?
Confusingly you need an MDISC writer for some but not all disks.
Any bluray reader will work to read tho.
The discs are entirely compliant with the Blu-Ray spec, there is no “compatibility” mark; anything made in the past 10-15 years should work fine. Your writer may be out of spec?
Apparently original M-Disc DVDs required a more powerful laser than normal, but that is not the case for Blu-Ray.