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Bit-for-Bit DVD/Blu-Ray Backup (lemmy.ml)
submitted 4 days ago* by to c/linux@lemmy.ml
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I want to create a bit-by-bit backup of my DVD and a Blu-ray disc without removing its encryption. Is dd be the best method, and if so, what flags or settings should I use? Also, is comparing the SHA-256 hash of the generated ISO file with the hash of the original disc’s raw data (read from /dev/sr0) the best method for verifying the backup’s integrity?

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[–] [S] 9 points 4 days ago* (last edited 4 days ago) (7 children)

@Sxan@piefed.zip nailed the main point. I’m making a legal backup copy of the content to store on DVD/Blu-ray discs in case something goes wrong or the disk get corrupted

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  • [–] 3 points 3 days ago* (last edited 3 days ago)

    Creating a (usable) backup of a soon failing data carrier should be legal either way. Yeah, a lot of countries have stupid laws there, but as long as you don't share the data on the internet, you should be fine.

    Also to note: to legally watch a DVD, you require either Windows or MacOS, with a supported (proprietary) player software, in most jurisdictions. So, there, no legal DVD for Linux (or Haiku, Android), laws are stupid. And instead of cracking it on each watch, better to just do it once.

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  • [–] 2 points 4 days ago (2 children)

    there is no legal issue with ripping your own dvd and using it on a jellyfin server or even making dvd copies.

    the only restriction is you cant distribute or sell access to them

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  • [–] 2 points 3 days ago* (1 child)

    In Belgium at least it is illegal to circumvent copy protection. This isn't even exclusive to the US, so I'm not sure where you got that idea from. So it is perfectly legal here to rip a cd from the public library but not necessarily for a Blu-Ray you bought

    Edit: dvd's can have copy protection so in that case it would depend on the specific dvd

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