Slim Down your PSX Games

Garrett and Devilgun informed PSPUpdates of some steps that you can take to remove the extra empty bytes from PSX images, accounting for the difference in the actual game size and the size on disc. It appears like their was quite a bit of discussion to find a way to increase compatibility but it seems as if they have come up with a solution. They key is to make sure the LBA in the ISO extraction utility and CDGENPS2 are identical. Be aware that not all PSX games will work POPS and not all games with work with this method. If you're looking to free up some space on your Memory Stick, than some of you may want to give this a try. Devilgun's method calls for MagicISO and Garrett's uses ISOBuster but the steps are very similar. I've posted both of their instructions below if you have a preference for either one of these utilites.

Garrett's instructions:
  1. Extract the ISO contents to a folder on your hard drive.
  2. Open that folder and select ALL of the extracted contents from the root of the disc.
  3. Open CDGENPS2.
  4. Drag the contents of the folder into the CDGENPS2 window (the giant white space that says ISO near the top)
  5. (Optional) Go to file-> Edit Volume and change the name of the volume so that it matches the original title of the game (for archival reasons only).
  6. Click the IMG button on the left-hand side of the screen and save the Bin/ISO/IMG to whatever directory you want , and use POPS to convert to PSP EBOOT and test it.
On correcting the LBA issue:
You can do so with ISOBuster by exporting a Tree File, and then using CDGENPS2's advanced menu to import it (this is a new discovery to me too, as none of my LBA's were changed thru drag + drop).

Also, you can fix them manually by comparing the LBA section from whatever ISO utility you are using with the LBA in CDGENPS2. Starting from the top, compare the LBA and change it accordingly by: right-clicking the file, and clicking propeties. Check the FIX LBA box type in the correct LBA value.

Devilgun's instructions:
  1. Open the iso/bin with MagicISO
  2. Now you can see the data AND the !!!LBA!!! Information
  3. Copy the Data to a new Folder on Harddisk or just drag and drop it to CDGENPS2
  4.  !!!!!NOW!!!!! LOOK AT THE LBA Information in CDGENPS2. IT has to be the SAME for each File as in MagicISO - So order the files, so that the LBA is exactly the same.
  5. Make the IMG
  6. Compress it with pops.
  7. Play it!
Download CDGENPS2
Download ISOBuster
Download MagicISO

Via PSPUpdates
posted on Monday, January 15, 2007 7:43 PM by Auri

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