Page 3 of 3
Re: Dreamcast/Saturn Rare Games Reprint 2020
Posted: Sun Dec 11, 2022 2:40 pm
by SEGA RPG FAN
It's a little more complicated than just getting a rip though, because the GD-ROM format has a low density and high density area of the disc. I imagine It would take some doing to create a master with both of those and convince the machine.
Re: Dreamcast/Saturn Rare Games Reprint 2020
Posted: Sun Dec 11, 2022 2:44 pm
by bingobongo
I'm not sure what you mean?
Geist Force was pressed onto CD years back. There's nothing that complicated about it. Unless these are fake GDRoms? (have I not read this thread properly?)
Re: Dreamcast/Saturn Rare Games Reprint 2020
Posted: Sun Dec 11, 2022 2:54 pm
by SEGA RPG FAN
I don't think you're following. All pressed games to date, that aren't official are using the mil-cd exploit and are essentially standard CDs. They are not GD-ROMs. Geist force and all other games released for burning have been ripped, sometimes downsized, and re-packed in a different disc format. These guys claim to be making 1:1 copies which has not been done to date.
Re: Dreamcast/Saturn Rare Games Reprint 2020
Posted: Tue Dec 13, 2022 2:23 am
by Nico0020
These wont fool any DC collector. Obviously being a CD and not a GDR style disc with the data side not having the large spacing for the 1st track. Although the average game collector wouldn't notice a difference at first glance.
Re: Dreamcast/Saturn Rare Games Reprint 2020
Posted: Tue Dec 13, 2022 5:33 am
by Tarnish
Assuming they're using this double density CD approach (which is doubtful, seeing it never spread to be a mainstream and popular solution) I'm just wondering if the Dreamcast would even be able to read these discs at all, when I'm reading things like this:
The Sega Dreamcast GD-ROM of 1998 was a similar concept, but this used half-speed reading of discs with more closely packed pits to increase capacity to 1.2 GB.
Sega achieved the higher density by decreasing the speed of the disc to half and by letting the standard CD-ROM components read at the normal rate thus nearly doubling the disc's data density. This method allowed Sega to use cheaper off-the-shelf components when building the Dreamcast.
So sure, storage capacity is similar, but sounds like there is way more to it than that. The Sony approach doesn't say anything about disc spin/reading speed. Who knows if the DC can read the disc with the different pitch and pit sizes.
Apparently other brands were also experimenting with this concept:
DDCD was part of a wave of technologies aimed at enhancing the compact disc, none of which managed to gain much market share.
MultiLevel Recording, developed in 1992 by Optex Corporation, was a proposed technology that never saw the light of the day. It promised to burn 2 GB onto one CD and a couple of disc burners from TDK and Plextor were set for release in 2002 for $200 with discs costing around $2. No ML products were ever released.
In September 2002, Sanyo announced it had achieved the same result as DDCD using standard CD-Rs with its HD-Burn technology. This allowed users to burn 1.4 GB on a standard 700 MB CD. However, the resulting CD could only be played back on DVD drives.
In 2003, Plextor released a CD burner that utilized their proprietary GigaRec technology to allow users to burn a maximum of 980 MB on a standard 80 minute CD and 1.2 GB of a 99 minute CD. Like DDCD, the result was achieved by burning smaller pits. The resulting disc could be read perfectly on Plextor GigaRec drives. Results with reading the disc on other optical drives were mixed.
At least SEGA was apparently the first to pull it off in 1998, so there's that.
Re: Dreamcast/Saturn Rare Games Reprint 2020
Posted: Tue Dec 13, 2022 9:45 am
by SEGA RPG FAN
That's why this sounds fake. A half plausible explanation to try to cover for the elephant in the room of not being able to press GD-ROMS.
Re: Dreamcast/Saturn Rare Games Reprint 2020
Posted: Wed Dec 14, 2022 2:48 pm
by OGDCFAN99
If they actually found a way to press real GD-ROM's again, it would be a HUGE deal and we would've heard about it from all over the scene.