PS1/2 How can i undo FreeDvdBoot ESR patch on .iso?

[DarthMotzkus]

Hi there.
So, the title. I have backed up all my .iso files patched with FDVDBoot ESR patcher, and i need the .iso raw back, and don't want to redump the images.
Is it possible/safe?

Thanks.

 

[esmith13]

Using an ESR patcher permanently changes data at (I believe) 2-3 different locations on the disc - one of which is to change the disc type information to make it report as a DVD Video instead of software on a DVD disc. It is even more drastic of a change if the original disc was a CD not a DVD. To the best of my knowledge this is NOT reversible via any available software, since even if it is technically possible, it would be less effort and more accurate to simply redump the disc.

 

[Windows_10_User]

Using an ESR patcher permanently changes data at (I believe) 2-3 different locations on the disc - one of which is to change the disc type information to make it report as a DVD Video instead of software on a DVD disc. It is even more drastic of a change if the original disc was a CD not a DVD. To the best of my knowledge this is NOT reversible via any available software, since even if it is technically possible, it would be less effort and more accurate to simply redump the disc.

Do you know what's the difference between ESR Disc Patcher, ESRPatchJava, ESRPatcher Pro and FDVDB ESR Patcher GUI?

 

[SylverReZ]

Do you know what's the difference between ESR Disc Patcher, ESRPatchJava, FDVDB ESR Patcher GUI and ESRPatcher Pro?

They both do the exact same thing - patching the ISO to be bootable via the ESR application. It modifies the layout in such a way to make it look as if it was a DVD Video. This method will not work with CDs, and therefore a chip is required to do so.

 

[Windows_10_User]

They both do the exact same thing - patching the ISO to be bootable via the ESR application. It modifies the layout in such a way to make it look as if it was a DVD Video. This method will not work with CDs, and therefore a chip is required to do so.

I thought that but I guess there should be a difference between all of them because if not why would there be so many different tools? I've read CDs must be converted to DVDs so that ESR can read them.

 

[Ryccardo]

I thought that but I guess there should be a difference between all of them because if not why would there be so many different tools?

You named 4 programs, there are much more to make a PSP CSO lol (which also come in a variety of platforms and command line vs GUI, only one has a "significant" difference in that it allows you to not compress known lossy media files, but the result is still a "standard" CSO)

I've read CDs must be converted to DVDs so that ESR can read them.

So that the mechacon can read them - they're movie DVDs as far as the console is concerned, and you can't have a DVD-Video on a CD (unless you try hard enough and make something that violates the standard and the PS2, made by a movie major who is also the co-inventor of both the CD and the DVD, doesn't support)

"ESR patch" = convert a PS2 disc, which is pure ISO9660, to also have an UDF 1.02 filesystem (DVD-Video standard) containing the smallest possible DVD movie

ESR the homebrew = PS2 homebrew that tries to runs these discs (accepted by the console for being DVD-Video) with custom drivers that simulate an ISO9660 only data DVD

 

[Windows_10_User]

You named 4 programs, there are much more to make a PSP CSO lol (which also come in a variety of platforms and command line vs GUI, only one has a "significant" difference in that it allows you to not compress known lossy media files, but the result is still a "standard" CSO)


So that the mechacon can read them - they're movie DVDs as far as the console is concerned, and you can't have a DVD-Video on a CD (unless you try hard enough and make something that violates the standard and the PS2, made by a movie major who is also the co-inventor of both the CD and the DVD, doesn't support)

"ESR patch" = convert a PS2 disc, which is pure ISO9660, to also have an UDF 1.02 filesystem (DVD-Video standard) containing the smallest possible DVD movie

ESR the homebrew = PS2 homebrew that tries to runs these discs (accepted by the console for being DVD-Video) with custom drivers that simulate an ISO9660 only data DVD

And why are there so many programs for doing the same?

 

[SylverReZ]

And why are there so many programs for doing the same things?

Only for alternatives, if one looks better or another supports your machine. Doesn't matter which one works or not.

 

[Windows_10_User]

Only for alternatives, if one looks better or another supports your machine. Doesn't matter which one works or not.

I don't think a chip is needed to play CDs using ESR like you said since according to what I read, they just have to be converted to DVDs.

 

[SylverReZ]

I don't think a chip is needed to play CDs using the ESR application lke you said since according to what I read, they just have to be converted to DVDs.

That or the swap trick with CogSwap or Swap Magic will work. PS1 games on the other hand still require a modchip to boot.

 

[Windows_10_User]

That or the swap trick with CogSwap or Swap Magic will work. PS1 games on the other hand still require a modchip to boot.

I never heard of CogSwap.

 

[SylverReZ]

I never heard of CogSwap.

It's a homebrew alternative to Swap Magic, meaning it does not use copyrighted code and was written from the ground up.

https://www.psx-place.com/resources/cogswap-loader-by-hermes.668/

 

[Windows_10_User]

It's a homebrew alternative to Swap Magic, meaning it does not use copyrighted code and was written from the ground up.

https://www.psx-place.com/resources/cogswap-loader-by-hermes.668/

Is it better than SwapMagic?

 

[SylverReZ]

Is it better than Swap Magic?

Yes. It doesn't require the Swap Magic disc since they go for quite a bit online. All that is needed is CogSwap on your Memory Card or USB, FreeMcBoot, and a retail game that is either DVD or CD which matches to your backup/burnt game.

So if it's a CD-based game that you're swapping, you need a retail CD game to use it.

 

[Windows_10_User]

Yes. It doesn't require the Swap Magic disc since they go for quite a bit online. All that is needed is CogSwap on your Memory Card or USB, FreeMcBoot, and a retail game that is either DVD or CD which matches to your backup/burnt game.

So if it's a CD-based game that you're swapping, you need a retail CD game to use it.

What is the procedure for the SwapMagic disc, by the way, and isn't there a SWAP MAGIC ISO so the SwapMagic disc isn't actually needed?

 

[SylverReZ]

What is the procedure for the Swap Magic disc, by the way, and isn't there a Swap Magic ISO so the Swap Magic disc isn't actually needed?

Swap Magic comes with two discs; one for DVD discs and another for CDs. They aren't interchangeable, something to do with the length for TOC.

You insert either one that matches to whether your backup is a CD or DVD, then once the Swap Magic menu appears, you swap the disc whilst the tray sensor is held. For PS2 phat you slide the card underneath the tray and move it towards the right that unlocks the tray and swap the disc that way, or, for the slim model you need a few pieces to keep the sensor held down.

Same methods apply to CogSwap; however, CogSwap automatically tells you what type of disc is inserted.

Swap Magic is a commerical product, cant provide you ways to obtain it because of the rules.

 

[Windows_10_User]

Swap Magic comes with two discs; one for DVD discs and another for CDs. They aren't interchangeable, something to do with the length for TOC. You insert either one that matches to whether your backup is a CD or DVD, then once the Swap Magic menu appears, you swap the disc whilst the tray sensor is held. For PS2 phat you slide the card underneath the tray and move it towards the right that unlocks the tray and swap the disc that way, or, for the slim model you need a few pieces to keep the sensor held down.

Same methods apply to CogSwap; however, CogSwap automatically tells you what type of disc is inserted.

If using the SWAP MAGIC ISO, SwapMagic discs aren't needed, right?

 

[SylverReZ]

Also, if using the Swap Magic ISO, Swap Magic discs aren't needed, right?

But that defeats the purpose of Swap Magic. Swap Magic was designed to boot game backups without a modchip. If you have a softmodded console, all of your game ISOs can be stored on the hard drive with Open PS2 Loader.

 

[Windows_10_User]

But that defeats the purpose of Swap Magic. Swap Magic was designed to boot game backups without a modchip. If you have a softmodded console, all of your game ISOs can be stored on the hard drive with Open PS2 Loader.

The SWAP MAGIC ISO could be accessed without a modchip too but I still don't get the utility of SwapMagic discs and CogSwap since a retail game that on top of that has to match the burned one is needed.

 

[SylverReZ]

The Swap Magic ISO could be accessed without a modchip too but I still don't get the utility of Swap Magic discs and CogSwap since a retail game that on top of that has to match the burned one is needed.

Yes, but, a modchipped system can boot ANY disc without Swap Magic. It's only intended for systems without a modchip, or a softmodded console (well, partially). A modchipped system DEFEATS THE WHOLE PURPOSE of owning something like this.

Swap Magic DOES NOT need a retail game for swapping to a backup since the Swap Magic disc has the same protection rings as a retail game, to fool the PS2 into passing the checks. The same was done by Datel for their Action Replay discs (here). CogSwap on the other hand, if your system isn't modchipped which is why I explained this to you, needs a retail disc to swap to pass its checks.