Jo21 said:
hitachi managed to get 200gb 4 50gb layered disc to work on currect drives, with just firmwares update.
of course that depends on the method used, some require a lens modification
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No they didn't !
It was just a 100 GB 4 layer disc run on a prototype. They claim you "might" just need a firmware update,
but thats ridiculous, cause Hitachi can't speak for every BD Manufacturer in the world.
That was 1 year ago, btw. with no new news about the progress, they might have just failed.
Another aspect:
This news came just after the announcement of the 51 gb HDDVD. I guess Hitachi / BR group went just into damage control and just presented something half-baked.
But now that HDDVD is dead -> official vapor ware.