Hi everyone!

I’d want to replay my Shenmue games that I have on their original discs.

Sadly, I don’t have a Dreamcast and I don’t think I’d be able to rip them even with my bluray external drive.

So, I’ll have to download them. What would be a great place and how could I know the game hash since not all of them are compatible with retroachievements?

Thanks for your answer

EDIT: I managed to get european roms from Shenmue 1 ( https://retroachievements.org/game/3398/hashes ) and 2 ( https://retroachievements.org/game/3489/hashes ) on these 2 sites ( https://archive.org/download/RedumpSegaDreamcast20160613 and https://romsfun.com/roms/dreamcast/shenmue.html ).

Then I tried using Collision ( https://collision.geopjr.dev/ ) to check the game files but none of the MD5 hashes were the same as the ones on retroachievements.

So I have to admit that I'm a bit lost and don't know what to do just to be able to replay these lovely games while getting achievements.

EDIT2: This is what retroachievements is saying so apparently I shouldn't be looking for nan MD5 result. Still, Collision gives me MD5, SHA1, SHA256, SHA512, Blake3, CRC32 and Adler 32 results and none of them is the right one.

"Dreamcast uses a custom hash. The disc metadata and primary executable are hashed as follows:

The first 512 bytes of sector 0 are appended to the buffer. This contains the volume header and ROM header. The first 16 bytes must be "SEGA SEGAKATANA ". If not, discard as invalid.
The contents of the primary executable (as identified by the volume header) are appended to the buffer.
The buffer is hashed."

Edit3: In the end I just downloaded the games from https://archive.org/download/RedumpSegaDreamcast20160613 and https://romsfun.com/roms/dreamcast/shenmue.html and, when launching them, I got an information that I had something like 0 out 115 achievements, so I know these games work with retroachievements. Thanks!