Read GD-rom´s on normal CD-rom´s??

Mad · March 11th, 2003

i found this on web... it is true??
http://www.hostultra.com/~shenmuetb/gdrom/Gd_rom.htm

**Yeloazndevil** · March 11th, 2003

for some reason I don't believe that here is some info I found on the net

Quote:

The are 3 distinct area's when you look at the bottom of a GD-ROM disc.
The low-density inner track (dark gray) contains about 35 Mb (4 mins) DATA which is also accessible by normal CD-Readers.

The outer track (light gray) contains about 1 Gb (112 mins) DATA but is written in a high density format which can NOT be accessed by normal CD-Readers.

Quote:

A normal CD-Reader will only read the first, inner track and won't read past the black area. Even if it could read past the black area then it can't read the high density track.

The details of the high-density region really aren't known, but there are two popular hypotheses. The most popular is that the high-density region has minimal error correction information that's even worse than regular CD audio. Support for this can be found with Sega's unusually excessive warnings on their discs "Handle with care. Scratched discs will not play." Unfortunately if that were true, then all of the discs at Hollywood Video would be broken. The other hypothesis is that the data is stored in CAV/CLV format much like laserdiscs

**Prafull** · March 11th, 2003

Hmm.
I was thinking about computer upgrade once icarus was released and wondering about what sort of drive I will need. If nothing works I will have to try and find dc games on cd roms.

Syed Fawad · March 11th, 2003

A normal CD ROM may not read a GD ROM directly, but there are ways to make it. IIRC, discussion about'em aren't allowed here.

**Prafull** · March 11th, 2003

Quote:

Originally posted by Fawad
A normal CD ROM may not read a GD ROM directly, but there are ways to make it. IIRC, discussion about'em aren't allowed here.

Is it illegal to backup your gdroms on cdrs ?

**Xeven** · March 11th, 2003

1 Gig != 680 megs

Syed Fawad · March 11th, 2003

Quote:

Originally posted by Xeven
1 Gig != 680 megs

It is called RIPPING

I have even seen DVD rips on CDs

**Xeven** · March 11th, 2003

Fawad, its called DATA. not VIDEO OR ANYTHING WHERE YOU CAN USE DESCTRUCTIVE COMPRESSION. geesuz. Imagine if we could all do that, heck i could just make my 680 meg iso into 10megs and dont give a rats ass that all i got was complete crap.

And about the topic, no in pactice you cant use a cdrom laser to read the gdrom's pit, they are too small. But in theory it is possible to read them using a dvd drive's laser. BUT, you would have to mess around with the dvd drive's servo controller. But like i said this is just in theory.

**Kane** · March 11th, 2003

As Xev said, it's simply not practical. What needs to be done is to hook up the BBA of your DC to your PC, and stream the data off.

**Prafull** · March 11th, 2003

Quote:

Originally posted by Kane
As Xev said, it's simply not practical. What needs to be done is to hook up the BBA of your DC to your PC, and stream the data off.

And after that, you cant burn it on cdr ?

**Kane** · March 11th, 2003

>And after that, you cant burn it on cdr ?

Not unless it's < 700 megs.

**Prafull** · March 11th, 2003

Quote:

Originally posted by Kane
>And after that, you cant burn it on cdr ?

Not unless it's < 700 megs.

Make it "two cdrs".

Syed Fawad · March 11th, 2003

Quote:

Originally posted by Xeven
Fawad, its called DATA. not VIDEO OR ANYTHING WHERE YOU CAN USE DESCTRUCTIVE COMPRESSION. geesuz. Imagine if we could all do that, heck i could just make my 680 meg iso into 10megs and dont give a rats ass that all i got was complete crap.

And about the topic, no in pactice you cant use a cdrom laser to read the gdrom's pit, they are too small. But in theory it is possible to read them using a dvd drive's laser. BUT, you would have to mess around with the dvd drive's servo controller. But like i said this is just in theory.

I am quite aware of what you are saying here. Those rips contain downsampled music, dummy FMV blank file (nothing happens during FMVs)

However, I have seen ppl managing to RIP DVDs or GDs to multiple CDrs without removing usefull stuff.

The most incredible rip I have ever seen in my life is that of the GTA3 PS2 version. It was on one CDr, without ANY data missing.

JuniorCRB · March 12th, 2003

hmm.....was the ps2(original) one a dvd or a ps2 cd rom?

**Kane** · March 12th, 2003

? The PS2 has a DVD drive. Some games are CD, but most now are DVD.

Syed Fawad · March 12th, 2003

Quote:

Originally posted by JuniorCRB
hmm.....was the ps2(original) one a dvd or a ps2 cd rom?

If you are asking about GTA3 PS2 version, then yes it was a DVD.

JuniorCRB · March 13th, 2003

then how could it fit on a cd is it possible you saw a dvd-r? not that i'm doubting you but i have no idea how that could be accomplished, without killing some data (FMV, music ect.)

Exophase · March 13th, 2003

Quote:

Originally posted by Xeven
Fawad, its called DATA. not VIDEO OR ANYTHING WHERE YOU CAN USE DESCTRUCTIVE COMPRESSION. geesuz. Imagine if we could all do that, heck i could just make my 680 meg iso into 10megs and dont give a rats ass that all i got was complete crap.

And about the topic, no in pactice you cant use a cdrom laser to read the gdrom's pit, they are too small. But in theory it is possible to read them using a dvd drive's laser. BUT, you would have to mess around with the dvd drive's servo controller. But like i said this is just in theory.

Um... don't quote me on this but I believe the GD-ROM uses the same pit density as CD-ROM, and it is in fact filesystem layout and overwrites that let it get that much on a single one. For smaller pits, well you're thinking of DVD here like you said.... and I know for a fact that some people CAN read some GD-ROMs on some CD-ROMs, probably by accessing the hardware in some direct (possibly proprietary) way rather than using the customary whatever APIs with it (can you tell I've never interfaced with a CD-ROM before?)

- Exo

Exophase · March 13th, 2003

Quote:

Originally posted by Lord Kane
>And after that, you cant burn it on cdr ?

Not unless it's < 700 megs.

Sometimes you can overburn to more than that.... I don't even have a CD-burner but I'm certain of this. Reminds me of my 1.7mb floppies.

- Exo

**Yeloazndevil** · March 13th, 2003

Quote:

Originally posted by Exophase

Um... don't quote me on this but I believe the GD-ROM uses the same pit density as CD-ROM, and it is in fact filesystem layout and overwrites that let it get that much on a single one. For smaller pits, well you're thinking of DVD here like you said.... and I know for a fact that some people CAN read some GD-ROMs on some CD-ROMs, probably by accessing the hardware in some direct (possibly proprietary) way rather than using the customary whatever APIs with it (can you tell I've never interfaced with a CD-ROM before?)

- Exo

did u read my post above?

Quote:

Sometimes you can overburn to more than that.... I don't even have a CD-burner but I'm certain of this. Reminds me of my 1.7mb floppies.

but u can't overburn that much

March 11th, 2003	#1 (permalink)
Mad AKA snkmad Join Date: Apr 2001 Location: Brazil, Fortaleza-Ceará Posts: 2,839	Read GD-rom´s on normal CD-rom´s?? i found this on web... it is true?? http://www.hostultra.com/~shenmuetb/gdrom/Gd_rom.htm __________________ [WinXP SP3] [Gigabyte GA-M61PM-S2] [Athlon64 X2 3800+ @2.00Ghz] [XFX Geforce 8600GT XxX 256MB DDR3] [17" SyncMaster 753v] [Samsung SATA II HD080HJ 80GB] [Samsung SATA II HD250HJ 250GB] [Kingston 2x1GB DDR2 6400@800MHz CL6] [Samsung CDDVDW SH-S203B] [NVIDIA nForce Networking] [Realtek ALC883 @ nVIDIA MCP61]

March 11th, 2003	#3 (permalink)
Prafull Administrator, PCSX2 tester Join Date: Aug 2001 Location: India Posts: 637	Hmm. I was thinking about computer upgrade once icarus was released and wondering about what sort of drive I will need. If nothing works I will have to try and find dc games on cd roms. __________________ E6750, Abit ip35E, XFX 8600GT 256 MB DDR3, Transcend 2GB DDR2 800 RAM

March 11th, 2003	#4 (permalink)
Syed Fawad -PM to advertise here- Join Date: Nov 2001 Location: In an average country of an average planet of the solar system of an average star of an average galaxy of an average cluster. Still not average... Posts: 8,261	A normal CD ROM may not read a GD ROM directly, but there are ways to make it. IIRC, discussion about'em aren't allowed here. __________________ Asus K8N (nForce3) AMD64 3000+ (754) 768MB DDR 400MHz (PC 3200) nVidia Geforce 6600GT 128MB (AGP) Aquamark3 - 53,000 "Good friends mustn't always be together. It is the feeling of oneness when distant that proves a lasting friendship"

March 11th, 2003	#6 (permalink)
Xeven A BIG BAD BATARD™ Join Date: Sep 2001 Posts: 5,517	1 Gig != 680 megs __________________

March 11th, 2003	#8 (permalink)
Xeven A BIG BAD BATARD™ Join Date: Sep 2001 Posts: 5,517	Fawad, its called DATA. not VIDEO OR ANYTHING WHERE YOU CAN USE DESCTRUCTIVE COMPRESSION. geesuz. Imagine if we could all do that, heck i could just make my 680 meg iso into 10megs and dont give a rats ass that all i got was complete crap. And about the topic, no in pactice you cant use a cdrom laser to read the gdrom's pit, they are too small. But in theory it is possible to read them using a dvd drive's laser. BUT, you would have to mess around with the dvd drive's servo controller. But like i said this is just in theory. __________________ Last edited by Xeven; March 11th, 2003 at 07:58.

March 11th, 2003	#9 (permalink)
Kane 邪魔ゎ指せない Join Date: Jan 2002 Location: Gosport, England Posts: 26,253	As Xev said, it's simply not practical. What needs to be done is to hook up the BBA of your DC to your PC, and stream the data off. __________________ >Site Live< Pop over to my site for help with setting up PSX emulators. Help for the Final Fantasies and other RPGs avalaible Celes: (Desktop) Athlon 64 X2 4200+, 2Gb 400MHz DDR Ram, MSI K8N Platinum, GeForce 8800 GTS 320Mb, 500Gb RAID HDD, Vista Business Erika: (MCPC) Athlon XP 2400+, 1Gb 400MHz DDR Ram, geForce 6800 256Mb, 80Gb Hdd, XP 2005 MCE Kimiko: (Desktop 2) Athlon 64 3000+, 512Mb 400MHz DDR Ram, Asus K8V, geForce 6800 128Mb

March 11th, 2003	#11 (permalink)
Kane 邪魔ゎ指せない Join Date: Jan 2002 Location: Gosport, England Posts: 26,253	>And after that, you cant burn it on cdr ? Not unless it's < 700 megs. __________________ >Site Live< Pop over to my site for help with setting up PSX emulators. Help for the Final Fantasies and other RPGs avalaible Celes: (Desktop) Athlon 64 X2 4200+, 2Gb 400MHz DDR Ram, MSI K8N Platinum, GeForce 8800 GTS 320Mb, 500Gb RAID HDD, Vista Business Erika: (MCPC) Athlon XP 2400+, 1Gb 400MHz DDR Ram, geForce 6800 256Mb, 80Gb Hdd, XP 2005 MCE Kimiko: (Desktop 2) Athlon 64 3000+, 512Mb 400MHz DDR Ram, Asus K8V, geForce 6800 128Mb

March 12th, 2003	#14 (permalink)
JuniorCRB Sega Fanboy Join Date: Aug 2001 Location: I don't know Posts: 757	hmm.....was the ps2(original) one a dvd or a ps2 cd rom?

March 12th, 2003	#15 (permalink)
Kane 邪魔ゎ指せない Join Date: Jan 2002 Location: Gosport, England Posts: 26,253	? The PS2 has a DVD drive. Some games are CD, but most now are DVD. __________________ >Site Live< Pop over to my site for help with setting up PSX emulators. Help for the Final Fantasies and other RPGs avalaible Celes: (Desktop) Athlon 64 X2 4200+, 2Gb 400MHz DDR Ram, MSI K8N Platinum, GeForce 8800 GTS 320Mb, 500Gb RAID HDD, Vista Business Erika: (MCPC) Athlon XP 2400+, 1Gb 400MHz DDR Ram, geForce 6800 256Mb, 80Gb Hdd, XP 2005 MCE Kimiko: (Desktop 2) Athlon 64 3000+, 512Mb 400MHz DDR Ram, Asus K8V, geForce 6800 128Mb

March 13th, 2003	#17 (permalink)
JuniorCRB Sega Fanboy Join Date: Aug 2001 Location: I don't know Posts: 757	then how could it fit on a cd is it possible you saw a dvd-r? not that i'm doubting you but i have no idea how that could be accomplished, without killing some data (FMV, music ect.)

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