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PS1 and PS2 games use a very strict architecture for how the binary files of the games are organized on a discs. When a disc copying program copies these discs, it's known that they will leave the padding of empty bits (0xFF) for the remainder of the XXXMB media. For example, Tetris Plus for the PS1 has a total file size on the disc of 43.0 MB and the image from CloneCD is 566MB. However, if you try to remove the padding from a disc, it will no longer work with emulators, including POPS. A utility for those who load games from their PS2 hard drives to lessen the size of the images, known as CDGENPS2 (Much like UMD-GEN), has the ability to remove this padding and keep the structure of the disc intact. Using this utility with some software that can extract an ISO to its contents can bring the 566MB Tetris Plus image down to about 50MB (POPS compresses it to about 400MB). How to do it: If it doesn't work and I get enough emails about it not working I will write a more in-depth tutorial about it with screenshots and everything on the forums. 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. |
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165 Comments
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by PSP Novice Hacker - J (Unregistered) - 2007-01-12 |
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Damn this is def a great find. I hope things go well in testing this concept. Ill try my hands at it & will let know if success. If failure i'll shamefully keep to my self... hehe.
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Re: pspuser (Unregistered) - 2007-01-13 |
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booster where are you!! >:X
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Re: Garrett (Unregistered) - 2007-01-13 |
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Allright, I made a mistake in my directions, my exact method skips the extraction to hard disk. I simply drag ISO contents from MagicISO and drop them into CDGENPS2, if you want my Eboot for tetris (minus the aduio tracks as well) e-mail me, and i can send you the *WORKING EBOOT* to prove it works. I have written a graphical tutorial which can be seen here:
http://forums.qj.net/f-general-psp-help-22/t-guide-shrinking-psx-game-size-89945/page2.html#post1322239
Sorry for the confusion and the adding of an extra step (I did it to avoid other confusion, but it seems that that causes the method to stop working)
And to those saying that compression nearly nullifies zero-space, you are correct MOST compression algorithms do, however the POPS compression algorithm does not, try it with tetris plus: 566 MB ISO -> about a 400MB EBOOT with compression lvl 9 however using my method and removing the CDDA audio (which is about 40MB of the disc) I have about an 8mb eboot with keys.bin and it works.
you can e-mail me here:
Z E R O _AT_ G R - P . C O M (remove the spaces, _AT_ replaced with @, this is to prevent spammage)
Title the E-mail EBOOT PLEASE (or it will be ignored)
Zero (Garrett)
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Re: sean (Unregistered) - 2007-01-13 |
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I made ff9 about 251mb working with popstation by replacing the str files. Its not new its been around for a while but no one uses it? theres a guide here http://www.pocketmatrix.com/guides/psxrip/
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Re: Left Out Guy (Unregistered) - 2007-01-13 |
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maybe some people want to keep theyre FMV's games such as FF9 are story heavy and movies are a big part of the game better to just take out the dummy space
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by Victor B. (QJ. NET Staff) - 2007-01-12 |
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do you want chocolate chip cookies? *Say yes!*
Edited by Victor B. (Q.J. NET Staff) , because:
You know they want eboots. You also know we don't necessarily like that sort of advertising. As you can see, we've done the math for you and amended your comment. :D
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Re: ? (Unregistered) - 2007-01-12 |
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Wow. Are you for real? I'm checking out your forum and wow it seems you really are giving out PS1 Games for PSP. Yeah...I'm downloading one of them now...I really hope this isn't a trick.
BTW: I'm pretty sure your posting a link to a site for free ISOs is illegal and definately against website policy.
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by CT (Unregistered) - 2007-01-12 |
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I really want to see how this turns out. I'm going to wait a little longer to see reports on how it is done and how the games are affected on the PSP. If all's well I could theoretically get my entire PS1 library onto my 4GB memstick (currently only holding 5 games among a bunch of other things).
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Re: bob (Unregistered) - 2007-01-13 |
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A moron?
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Re: CT (Unregistered) - 2007-01-14 |
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You answered you own question, "bob", and yes, you are a moron.
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by Loco (Unregistered) - 2007-01-12 |
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Blah, now i have to revert my .eboots back to isos, rip them and turn them back into eboots >< I hope the compiling for the isos doesnt take as long considering the files are only 50mbs each after....
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Re: Kosmokrator (Unregistered) - 2007-01-12 |
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That's exactly why I save the ISOs on my computer, even when i'm done with them.
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Re: kura (Unregistered) - 2007-01-13 |
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I burn the originals, but whatever floats your boat:)
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Re: Harrier (Unregistered) - 2007-01-13 |
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Using psx2psp u can convert eboots back to iso's
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by unlucky3_01 (Unregistered) - 2007-01-12 |
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or only for 3.02B?
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Re: it works for 302b (Unregistered) - 2007-01-12 |
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it works for 302b
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Re: elboffor (Unregistered) - 2007-01-13 |
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i think ule find this is for 3.03 oe-b, but ripping iso's shud work with all psx emu's
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Re: Swifta (Unregistered) - 2007-01-13 |
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I think you'll find that talking like you know s-hit when you don't is gonna get you flamed, rtard.
This is for any ps1/ps2 image and maybe some similar platform compressions.
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Re: Swifta (Unregistered) - 2007-01-13 |
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I watch scat porn religiously.
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by me (Unregistered) - 2007-01-12 |
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so.... this is like compression but not acually compressing, similar to the dummy file theroy
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by DrNicket - 2007-01-12 |
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This is a great day for POPStation users! I'll cross my fingers and give it a try a little later tonight. I'll post my results somewhere.
Thanks for the heads up Garrett!
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by Logicfrog (Unregistered) - 2007-01-12 |
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if only winrar could extract the PS ISOs in the first place...
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Re: Ollie (Unregistered) - 2007-01-13 |
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a PS iso is an iso all the same. the only reason you wouldn't be able to extract it would be if it's corrupt or named improperly
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by Illegal Machine - 2007-01-12 |
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to one of those GUI programs that people have been putting out.
I personally couldnt figure it out... but this needs to be in the Popstation mix for sure!
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by lowlygamer (Unregistered) - 2007-01-12 |
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A Suikoden 2 ISO of 513 MB with lvl 9 popstation compression = 347MB
A Suikoden 2 ISO after this procedure = 436MB with a lvl 9 popstation compression to a 265MB eboot. However, the game doesn't want to load.
Good compression, but definitely not the 50MB goal. And no game play. I think the results of this compression method definitely depend on the game. Somehow I doubt FFVII will even shrink that far.
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Re: truecrisis (Unregistered) - 2007-01-12 |
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Did you not listen!?!? Suikoden WILL NOT be a 50mb game! theres simply too much data!!!!!!! compare suikoden to tetris! jesus, get a grip.
In your 3rd paragraph you *sort of* redeem yourself by actually realizing that it depends on the game, but i cant believe you actually expected a 50mb suikoden
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Re: lowlygamer (Unregistered) - 2007-01-12 |
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I posted before the update which talked about the size differences. I was clarifying for those who were peeing their pants over 50mb isos. Thank you for attacking me with harsh words. I definitely feel like this is a community I want to participate in more often.
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Re: d (Unregistered) - 2007-01-12 |
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truecrisis, please read others posts before you post. Flaming someone isn't real nice and you made yourself sound like an idiot.
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Re: a0dki11s (Unregistered) - 2007-01-13 |
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i tried FFVII...RESULTS 750MB------->734MB ...yay..
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Re: ouykcuf (Unregistered) - 2007-01-13 |
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Truecrisis is a noob.
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by Kosmokrator (Unregistered) - 2007-01-12 |
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I'm gonna test it, I'll post my results later.
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by dreary79 (Unregistered) - 2007-01-12 |
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I just did FF7 CD1
With CDGenPS2 PSXPSP game was 403MB
Without CDGenPS2 game was 529MB
Both are final PSXPSP games using 9 compression.
However, the CDGenPS2 game did not work. I either did something wrong or not all games work.
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Re: peeInMyPantz - 2007-01-12 |
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I tried the same thing with FF7 CD1, got the same file size, but it doesn't work as well. Just give me a blank black screen after the warning page
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Re: Jarf (Unregistered) - 2007-01-13 |
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I did the same with Gran Turismo 2.
The eboot is just under 400MB but doesn't load.
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by Victor B. (QJ. NET Staff) - 2007-01-12 |
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there is plenty of rain in Spain!
Edited by Victor B. (Q.J. NET Staff) , because:
We really hate having to keep editing these, you know.
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Re: chucky3456 - 2007-01-12 |
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stop pluggin your goddamn site, none of us want to go to it.
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Re: Shroud (Unregistered) - 2007-01-13 |
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Not in Barcelona, its been dry for several months now.
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Re: PotFarmer (Unregistered) - 2007-01-13 |
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lolol
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by Mky777 (Unregistered) - 2007-01-12 |
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Well, I followed the above instruction and guess what? it does not work. I used FF7 and the file size still big (622mb) The one compressed by popstation, by contrast, is only (529mb). very disappointed. sigh
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Re: dreary79 (Unregistered) - 2007-01-12 |
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It was a ton smaller for me, but the game did not work.
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by s (Unregistered) - 2007-01-12 |
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could QJ ban xhackers IP
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by HELP ME PLEASE! (Unregistered) - 2007-01-12 |
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Whenever I try to remove the dead space of an ISO it becomes 37.0 kbs! I know that this can't be right because I put in FF VII Disc 1. Plus whenever I try to save it saves it in the .ps2 format. HELP PLEASE!
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by McSesameChicken - 2007-01-12 |
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How do you extract the ISO contents? I'm assuming they don't just mean the .iso file, because I tried using this program with that, and nothing at all was compressed (Final Fantasy Tactics, if anyone's interested).
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Re: Help ME! (Unregistered) - 2007-01-12 |
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Use an archiving program... I suggest WinRAR. Once you download winrar then double click the iso files and extract them to where you want them to go.
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Re: McSesameChicken - 2007-01-12 |
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I used WinRAR to try to open up my FFT.iso file, but it says that no archives were found within the selected files or folders. What now?
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Re: hmmm (Unregistered) - 2007-01-13 |
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right click on it and click extract here if not try getting poweriso it also extracts them
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by HELP ME PLEASE! (Unregistered) - 2007-01-12 |
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When I extract the ISO from my eboots I only get BIN Files so i can't open them and take the files contents out! Anyone know how I can convert it?
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Re: Jamie M. (QJ. NET Staff) - 2007-01-12 |
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"MagicISO" or "Daemon Tools"
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Re: HELP ME PLEASE! (Unregistered) - 2007-01-12 |
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I used Magic ISO and got all the needed files... I am converting it right now.
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Re: Jarf (Unregistered) - 2007-01-13 |