Stripping an ISO from a home made psx eboot - here's how!

Well guys, I decided to download a few games today just to test my theory out - plus I didn't like some of the games as they still had hotshots icons in - anyway here's info on how to strip the original iso out of the eboot.


Download winhex and open your eboot file.

The iso starts at offset - 00150000 - so strip all info out of the file before that.

Ok we don't know how big the iso is - but we do know this....

Look at the bottom of your file and then get a hex calculator (windows one in scientific mode will do) - then what you do is look at the address of the bottom row of your file and minus this hex from it - 8a20

Once you strip that you are left with the original iso file - so save whats left of your file as whatever.iso

Open your new iso with isobuster or some other iso software to confirm it's working and you should see all the psx files inside...that's all folks....

Thanks, this might come in handy.

Nice find could be handfull some day, thanks for sharing it.

mrdude can u explain it more clearly? thanks.

how u strip the info?

i tried highlight all before 00150000, took a long time of shift+page up.
i select remove from the edit menu.
said will be save as backup in temp.
after waiting. i save as .iso from winhex.
cant read with alcholhol the iso.

tried again but this time winhex say invalid txt when i tried to save as iso.

Drag and drop the .pbp onto the exe in this package, it will make file "out.iso" in the same dir as the PBP is in - I have only confirmed it working with a cloneCD image made into a PBP and back to iso (the out.iso is a few thousand bytes short of the original .img and does not have any of the extra data normally used by clonecd in the ccd and other files), the iso itself seems to be intact when checked using IsoBuster, but one cannot be too certain if it will be usable on the PSX without some extra data.

nice find!

is there another tool that makes the eboots be converted back to ISOs?
everytime I canvert it back with the tool above & try it thought a emulator it says its invaild image.

please can somebody reply or help with this problem.

Quality cheers.

NSCXP: nope, no other tools as of yet, that is why I wrote PSXstrip. What emulator are you trying? Do you know for sure that it works with iso's without bad data, directly?

Check your final iso with isobuster or a similar iso tool like daemontools or something, as I said before, PSX games have extra data that refer to bad blocks as a protection strategy, which are essentially discarded when you make an iso isntead of a clonecd or alcohol image.

At any rate, there could be a problem with the data that is stripped off the end, I just used Mr.Dude's number wrather than dig about for it myself. Verify your iso (preferably with something that isn't using the PSX bios) and if it is the tool that is causing the problem I can fix that.

I have tried it with epsxe and it wont run the game i'm trying is Thrill Kill but the game runs fine as eboot, any ideas?

Originally Posted by cory149

Drag and drop the .pbp onto the exe in this package, it will make file "out.iso" in the same dir as the PBP is in - I have only confirmed it working with a cloneCD image made into a PBP and back to iso (the out.iso is a few thousand bytes short of the original .img and does not have any of the extra data normally used by clonecd in the ccd and other files), the iso itself seems to be intact when checked using IsoBuster, but one cannot be too certain if it will be usable on the PSX without some extra data.

Thanks man...this is working great!

Originally Posted by cory149

NSCXP: nope, no other tools as of yet, that is why I wrote PSXstrip. What emulator are you trying? Do you know for sure that it works with iso's without bad data, directly?

Check your final iso with isobuster or a similar iso tool like daemontools or something, as I said before, PSX games have extra data that refer to bad blocks as a protection strategy, which are essentially discarded when you make an iso isntead of a clonecd or alcohol image.

At any rate, there could be a problem with the data that is stripped off the end, I just used Mr.Dude's number wrather than dig about for it myself. Verify your iso (preferably with something that isn't using the PSX bios) and if it is the tool that is causing the problem I can fix that.

Are you saying if we rip our games as a clonecd, go EBOOT, then back to ISO, we should be able to run it as an ISO on our PSP or a cso if you want it compressed further?

then what you do is look at the address of the bottom row of your file and minus this hex from it - 8a20

NSCXP: This is the problem. mrdude's length offset is NOT standard for every file. There does not appear to be any size reference to the original iso size (at least, not that I have found at any rate), and the data that appended at the end of the iso appears to be padded between the iso and the extra data.

Originally Posted by Cobra.uK

Are you saying if we rip our games as a clonecd, go EBOOT, then back to ISO, we should be able to run it as an ISO on our PSP or a cso if you want it compressed further?

Not at all. To run it on the PSP it has to run through the PSP's PSX emulator (which currently means popstation is the only way to do so with an iso).

Seem's to be working perfectly for me. I've tried it with 3 games now and the new isos work in epsxe.

Many thanks!

Originally Posted by orochiPSP

Seem's to be working perfectly for me. I've tried it with 3 games now and the new isos work in epsxe.

Many thanks!

Yep, same here, thanks!