GT4 backup to DVD9

[reddragon105]

First of all, I've read through the previous thread on this located here:
http://www.psx-scene.com/forums/showthread.php?t=31154

There's a lot of good info there, but it started in January and has almost 400 posts so it's getting a bit cluttered and I thought it should be ok to start a new post, especially as I thought I'd make this one with the intention of focusing on a full DVD9 backup of Gran Turismo 4 in light of the recent development - toolboys patches. I'd like to hear from anyone who has any thoughts on a backup method - and if anyone has tried anything, let us know, so we get a list of what doesn't work.

Here's what we have to work from:

GT4 is a dual-layer PS2 game with 3.07gb on Layer0 and 2.15gb on Layer1 (these sizes from my retail PAL release and may vary for others)

Toolboys patches allow us to make a flattened ISO image that works from hard drive. It essentially puts everything onto Layer0 and fixes the checks to allow the game to work from Layer0, thus it works from hard drive no problem, but still will not work from a burned dual layer backup as the whole game will not fit on Layer9

Therefore, it is necessary to burn a backup with everything on Layer0 except the file GT4L1.VOL which needs to go on Layer1. But how do we do this?

I know that DVD Decrypter gives an option to manually state a layer break, but so far this has not been found to work.
Taking a full ISO from an original GT4 and burning it directly the DL media should put the layer break in the right place. But the files still need to be patched (to fix the OTP/PTP issue). Therefore it should work IF we could take a full ISO and replace just the files that need patching with the patched versions (using a program such as ISOEdit or MagicISO). However the patched files are different sizes and so can not be easily replaced.


So please post anything else you know, anything you can think of, anything you've tried and how much success you've had, and any programs you can think of that might prove useful.

[Nas786]

Hi,
I have GT4 And HD ADVANCE (Network adaptor etc..) - What are the steps in making the Game run off the Harddrive?

Where do i get the "Toolboy" patches if needed??

What programs do i need etc.

All your help, Is MUCH appreciated as this is DOING MY HEAD IN!!

Thanks.

[reddragon105]

Nas786 - i'm sorry, i said this thread was to deal specifically with backing the game up on a DVD9. the tools are easy to find, they're posted in another thread, do a search. personally i don't have a hard drive in my PS2 so can't help you at all. i'm trying to help people who, like me, are more concerned with a full DVD9 backup which is looking more likely in light of toolboys patches

for everyone else - i've attached a file from toolboy that he made specifically for DVD9 backups. it works like the hard drive patches, it contains the necessary OTP/PTP patches, but not the layer patches (as they're not necessary, we're still dealing with 2 layers). It contains 2 IMLs, one for building each layer. (please note these are for the NTSC version, other versions require other IML files are the files on the DVD are different sizes and at different locations, you can easily make them yourself with CDVDGen).

The only problem we're left with is: once these 2 ISOs for the 2 layers are built, how do we burn them onto separate layers? Or - how do we create a single ISO, with both layers, with the layer break at the correct point?

[Nas786]

Ok, Sorry.

[bobsbigboy]

Hi guys,

finally I found a way to patch on here....hopefully an admin will read this and help me out....I had to register from another IP with my old screenname on other sites, which was bobsbigboy....

This is really "toolboy" as you know the nick, I've been trying to help you guys out for days but for some reason my real nick on here "toolboy" has all posting/email/etc disabled...so I can't do anything, not even email the admins to fix the bug!

anyways...I released a "fixed" DVD9_DL kit this morning on ps2hd.....I was figuring there is no easy way to burn a DVD9 with two ISOs...and plus a DVD9 ISO really has ALL TOC information at the beginning of the ISO..and with TWO ISOs, there is probably NO information in ISO-Layer0 for the file that is in ISO-Layer1......so even if you get both ISOs burned, I don't think the TOC that the PS2 reads (from Layer0) will tell it there is a file on Layer 1...

So....I figured out a way to merge the patched files back into the original Dual_layer ISO that everyone has....basically I "pad" the modified files with zeros at the end up to the size of the original file (so that apache will let you inject the modified file)...then afterwards, open up the ISO and modify the TOC information in it to tell it the actual size of the modified file (minus those padded bytes)...so essentially you end up having those padded zeros becoming unused space in the ISO...

here's the new DVD9 kit (it's also on ps2hd)...

hopefully someone can try it out...i'll be a few days before my DL media I ordered shows up!

- toolboy

[reddragon105]

thanks for the good work toolboy! exactly what was needed
i have to admit... i was trying something along the lines of padding the core.gt4 file with 0s, but same here, i have no DL disks to test it out either.
it seems like the biggest problem so far is getting test subjects.
hopefully someone will bite the bullet, try this, and report back...

[harriswd]

Nice work toolboy!

I've tried to burn i made with your tutorial but the Traxdata DVD+R DL i had turned to a coaster.
At 45% of the writing it reported write error and the burning with dvddecrypter stopped.
I'll get some DVD+R DL tomorrow and i 'll report back.

Damn i 've got over 20 DL disks burnt and got coasters.


*Seems that it stopped at the layer change, or maybe its just a bad blank disk

[reddragon105]

hey toolboy, just tried that new kit, got a couple of things i hope you don't mind me pointing out:

1) it doesn't include the file applyppf3.exe, so when it comes to step 2: applying patches, the command is not recognised unless you copy this file from another kit.

2) the bat files could do with another @pause command at the end, so that people can see if the patching was successful or not. otherwise the cmd prompt closes too quickly to read 'patching successful' (also its not necessary to open your own cmd prompt to run the bat files, they can be run just by double clicking on the correct one in the c:\test folder)

apart from that, everything works brilliantly and it looks promising, my DL disks are due tomorrow so we shall see!

[Manp]

try using write simulation (i think it's called "test mode" in DVDDecrypter) before wasting an expensive DVD DL disc

[Besko1979]

Hello
does somebody knows where the Layerbreake on the Pal version is?
I wont to burn it with DVD Decrypter
Could it be that it is on Sector1612160?
Because the mli File for the layer 0 image says that the image ends at sector 1612159