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Author Topic: What program to use to replace files on a CD  (Read 4533 times)

Bob Liu

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What program to use to replace files on a CD
« on: January 26, 2014, 12:05:49 pm »
I tried using CD image but that doesn't work right, all I want to do is replace a file on a disc with my edited one to see if what I changed works. Any one that people have experience with and know that works. I can't use power iso as that re compresses the disc and makes it smaller by 90mb and that makes the game not load at all so please help me out here.

FAST6191

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Re: What program to use to replace files on a CD
« Reply #1 on: January 26, 2014, 04:09:03 pm »
What platform and game? Most consoles do not exclusively use iso 9660 or UDF based formats, even those the do (various things in the Playstation line) often have exceptions and those exceptions do often fall into the sort of games most people are inclined to hack.

If PC then does the game have any anti piracy protection that might be triggered by you editing the iso? Poweriso program shuffle data around and make a smaller file could do it, this can be a different thing to the change itself causing a problem. Anti piracy is also an option in the consoles though you might have to do a bit more research there.

Bob Liu

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Re: What program to use to replace files on a CD
« Reply #2 on: January 26, 2014, 04:37:24 pm »
It's a fist of the north star game for the ps1, I edited a file and replaced some text and want to place the file back onto the disc. I would like you guys to help me out and tell me a program that would allow me to do so, it's nothing to do with anti piracy protection or anything like that. People have done stuff like this for other ps1 games and that's how those translations were done.

tryphon

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Re: What program to use to replace files on a CD
« Reply #3 on: January 26, 2014, 04:41:07 pm »
I bet UltraIso will work, among others.

Gemini

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Re: What program to use to replace files on a CD
« Reply #4 on: January 26, 2014, 04:57:22 pm »
Use CDmage, the beta that can insert files. Throw out of the window useless software that rebuilds the ISO without taking into account the original format (i.e. Power Iso, UltraIso, etc.). Most games won't work for a million reasons.
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tryphon

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Re: What program to use to replace files on a CD
« Reply #5 on: January 26, 2014, 05:04:42 pm »
UltraIso does likely take into account the original format (according to tests I've done 2y ago with PS2 games and several softwares, unless it has changed since).

But CDimage is likely very good too.

Bob Liu

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Re: What program to use to replace files on a CD
« Reply #6 on: January 26, 2014, 05:18:21 pm »
Thanks guys but I tried CD Image and didn't have a clue on how to access the disc and replaced files unless I wasn't doing it right. What I did was file open, selected the disc with raw image type but it just said image type different than assumed. I probably didn't do it right but can you guys walk me through it as im lost, I'll download that other program though and try that in the meantime.

Gemini

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Re: What program to use to replace files on a CD
« Reply #7 on: January 26, 2014, 05:57:04 pm »
Select M2/2352 track when opening an ISO, or load the CUE/CCD file instead to skip type selection.
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Bob Liu

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Re: What program to use to replace files on a CD
« Reply #8 on: January 27, 2014, 10:52:44 am »
Yea I opened the disc now but how do I replace a file, I clicked on the file to replace and picked the new one but it never changed but again I probably didn't do the right thing.

Edit
I extracted the file and it is the edited one, just the date in the iso didn't change for the file so I instantly suspected that it didn't work, silly me.
« Last Edit: January 27, 2014, 11:17:09 am by Bob Liu »

CUE

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Re: What program to use to replace files on a CD
« Reply #9 on: January 27, 2014, 01:18:27 pm »
PSX-MODE2: http://www.romhacking.net/utilities/848/

Usage: PSX-MODE2 isoname \file_to_be_replaced new_file

Bob Liu

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Re: What program to use to replace files on a CD
« Reply #10 on: January 27, 2014, 05:34:38 pm »
PSX-MODE2: http://www.romhacking.net/utilities/848/

Usage: PSX-MODE2 isoname \file_to_be_replaced new_file

That should be of use as I tried to replace a different file and I got an error even though I replaced a different one without error.

CUE

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Re: What program to use to replace files on a CD
« Reply #11 on: January 28, 2014, 03:32:22 am »
What game is it? Can you indicate what error message you get?

Bob Liu

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Re: What program to use to replace files on a CD
« Reply #12 on: January 28, 2014, 04:27:40 pm »
What game is it? Can you indicate what error message you get?

It's alright now as when I tried it later on in the day it worked fine, don't know why it didn't the first time around as I did the same thing.

CUE

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Re: What program to use to replace files on a CD
« Reply #13 on: January 29, 2014, 04:08:13 am »
It's alright now as when I tried it later on in the day it worked fine, don't know why it didn't the first time around as I did the same thing.
:thumbsup:

Jorpho

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Re: What program to use to replace files on a CD
« Reply #14 on: January 29, 2014, 11:38:08 pm »
If you want to make sure your edit is working, try editing the ISO image itself directly with a hex editor instead of trying to replace individual files.  You should be able to find the data you replaced.
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tryphon

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Re: What program to use to replace files on a CD
« Reply #15 on: January 30, 2014, 04:28:24 am »
Undoubtely the worst advice.

KC

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Re: What program to use to replace files on a CD
« Reply #16 on: January 30, 2014, 05:12:27 am »
Yes, especially for PSX discs. These manual changes would cause the error correction of the edited sectors to start acting up.

Jorpho

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Re: What program to use to replace files on a CD
« Reply #17 on: January 30, 2014, 09:16:34 am »
Oh?  Huh.  I had understood that a lot of games didn't use ISO 9660 filenames at all, or that if they did they were redundant and not actually used by the program.  I shall never speak of it again.

... http://www.romhacking.net/documents/63/ is still mostly correct, right?
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Gemini

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Re: What program to use to replace files on a CD
« Reply #18 on: January 30, 2014, 09:57:00 am »
Some PlayStation games indeed ignore the ISO9660 info almost entirely, but there are also mixed cases (custom TOC+ISO TOC accessed via CdSearchFile), and finally others where the table of contents is used for real. There isn't a precise rule to how the programmers decided to work around CD-Rom access.
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Bob Liu

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Re: What program to use to replace files on a CD
« Reply #19 on: January 30, 2014, 01:17:47 pm »
If you want to make sure your edit is working, try editing the ISO image itself directly with a hex editor instead of trying to replace individual files.  You should be able to find the data you replaced.

I was thinking about that but didn't know if it was safe, does it work because that would be great.