So I've been following this for a few weeks - awesome effort! I played (and finished) the original JP Saturn Grandia back in 1997, I don't think I've touched it since - mostly the game feels great but I always wanted to try in English.
Well, I finally got around to digging out my discs and ripping them. I haven't tried Disc 2 yet, but I've done them at 4x, 2x, and 1x, and I get the same checksums every time:
MD5: 8DA284DD2A0EF7F33EC946C2A6ACF2A4
SHA-1 : 651E2A638788F5F0FA03D4C7CEAE0F974671A243
SHA-256: 87AF96D4DD2F4A2523A1E525F2A6254C6EFD7FEFEA1445CF35D154B7E661683C
yours (from the readme.txt):
MD5: D1C273B9871A34E5D7A7168E30CDB421
SHA-1 : 75146114330BA9A028974253FB2186A29241D631
SHA-256: 68FA1AED046E4F4F052E67A0A4FD56D4E3C661BF77A478854D96D9AD772CE543
I didn't include the CRC-32 (because you don't specify the polynomial, initial value, reflections/xor) but it was different too.
Do I just have a different disk version? I'll have to boot it up in my Saturn to see if it still works - I don't see why it wouldn't. I just spent $80 on an HD Retrovision cable so I can actually play it on my TV (haven't had a CRT in years).
Here's the header info from disc 1:
SEGA SEGASATURN
SEGA TP T-45
T-4507G V1.002
19971108CD-1/2
J
J
GRANDIA
I'll rip disc 2 next but I'm expecting similar results.