*UPDATE 3* PS1 compression tips: remove dead space beforehand |

Garrett sent us a rather informative email about playing PS1 games on your PSP. He seems to have found a way to make the games run without all the extra padding originally placed on the disc. If you're wondering what that means, it's this: Imagine playing a 500MB game using only 50 MB of space.
You'll need something called CDGenPS2, which we've placed for download below. If you follow the steps, you should be able to get a game to play with a drastically smaller file size. We're currently testing it, but you're free to try out the procedure, too. Garrett says he'll make a more in-depth tutorial on it if people run into problems, which is really nice of him. For now, you'll do well to read through his email below (with some slight changes for grammar and clarity).
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:
- Extract the ISO contents to a folder on your hard drive.
- Open that folder and select ALL of the extracted contents from the root of the disc.
- Open CDGENPS2.
- Drag the contents of the folder into the CDGENPS2 window (the giant white space that says ISO near the top)
- (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).
- 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.
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.
UPDATE 1:
We tested it and the process seems to be working fine. Our test used R-Type Delta as the subject.
Normal file size: 323 MB
Using the usual compression methods: around 234 MB
Using Garrett's method: around 191 MB
As you can see, that seems pretty good. Your mileage will vary depending on the type of game you picked up and how much of the space in the disc is just dummy data. While you might say "Duh," we just felt the need to check. Right now, we're all pretty excited to see how drastic some changes wil be. Expect some data-filled games (like RPGs) to still remain big, as there's less dummy space that gets taken out.
UPDATE 2:
Due to insistent public demand (or frustration...both apply), Garrett (or Zero-X) has posted a graphical walkthrough of sorts for his compression tips. He's also using a program called ISOBuster for his procedure, so we've opted to add it as a download.
Note, however, that your mileage will still vary. Not every game will work on PopStation, and the amount of space saved by procedure will differ depending on the game and the content involved. Zero-X has a couple of comments on the forum link which should explain that a bit more.
UPDATE 3:
Garrett added an additional note that we noticed just now on the comments. It seems the LBA arrangement will have a big impact on whether or not the game you're tweaking will actually run.
For the sake of clarity, we're going to post two additional comments made by Garrett and Devilgun that should fix most of your problems. If not, then there may be something else getting in the way of getting your games to work properly.
Garrett's comment:
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 comment happens to explain the manual fix by having many exclamation points. We took notice of that, and Garrett did too, as he confirms Devilgun's comment. Here's his step-by-step guide, though you'll need MagicISO for it:
- Open the iso/bin with MagicISO
- Now you can see the data AND the !!!LBA!!! Information
- Copy the Data to a new Folder on Harddisk or just drag and drop it to CDGENPS2
- !!!!!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.
- Make the IMG
- Compress it with pops.
- Play it!
Download: [ISOBuster v2.0]
Discussion and Walkthrough: [Forum Thread]
$34.00 - $81.00
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Comments
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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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Thanks for the heads up Garrett!
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I personally couldnt figure it out... but this needs to be in the Popstation mix for sure!
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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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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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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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Followed the instruction.
No compression.
Didnt load.
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Is this only for isos?
Failed: extract bin, make new iso, compress to eboot
Testing: bin to iso, make new iso, compress to eboot
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Also had the same problem with bushido blade 2.
So the ctr i made was missing files so thats definitely why it didnt work.
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Dragged files straight from the CD to CDgen, got an IMG that was 600+ megs.
My compressed Eboot is 355.
A little depressing.
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ctr
Ridge Racer R4
my assumption is if they dont work with the emulator they wont work as eboots
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and i got 700 mb :| thats odd.
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ISO = 287 mb
After cdgenps2v2 = 322 mb
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1. Ripped the BIN file from my previous eboot.
2. Converted it to ISO
3. Compressed it using CDGENPS2
4. Using POPSTATION made an eboot compressed at level nine.
File Sizes:
Original: 529 Mb
Compressed: 200Mb!
The only problem is that after the Gameboot the game won't load. Anyone else having this problem?
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After this procedure it came down to 200mb.
It didn't work however, but strangely the PSX emu recognized the game as the old one and still had the same settings- other than that, it hung on a black screen.
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How about fixing it so it works and combining it with a "pop station" GUI???
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(also, later when I retried converting the files into bin instead of iso, I got 78 megs....but still no loading!!)
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the method work with ps2 games
this is only a theory, dont blame me if dont work
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theres probably a step skipped out somewhere in the tut
people just wait, as i can confirm this hadnt worked for me and will probably not work for you
lets wait for that picture tut hes gonna put up soon
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The rebuilt iso won't even work in a PSX emu, so it obviously isn't going to work as an eboot either.
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Also, compression makes the padding useless - try making a 10MB text file, full of spaces, and compress it in ZIP - you get a ~10KB file - this is the same for padding, compression reduces padding to almost nothing.
Totally useless IMO - unless you MUST use 3.02 OE-B and don't need RAW data (which most games do).
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how about cdda-games ??
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So this is officially 99% useless.
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THIS IS NOT A COMPRESSION!!!
you take parts of the iso out of it. the result is a still uncompressed iso. you must compare the sizes after compression then.
but the problem is:
IT DOES NOT WORK FOR ME.
all games i tried it on, from crash bandicoot 1-3 to gran turismo ... about 20 of them... did result in a blank screen.
even if i use the lba-extraction method (not mentioned in the article but used before to modify ps2 isos by me) it still resulted in a black screen.
thus i will be waiting for a tutorial on some other game... not the mentioned ones. i would propose the guide to include crash bandicoot 3, as this game also contains defective sectors and some illegal filenames (with . at the end)
anyways, i wonder if this will get any huge results in many games. if the dummy data on the cd has patterns, then the compression algorythm should also mostly get rid of the dummy data (repeating data normally is compressed rather good. if not then we need to do something about the compression algorythm).
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Guess it means "I want attention"
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GT2 at 401MB, can't beat it.
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this site has lots of info about this subject
megagames.com/psx/psx_utils.shtml
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this could affect what your trying to do here
i found this site which explains it
megagames.com/psx/psx_utils.shtml
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The eboot is just under 400MB but doesn't load.
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After following the steps i obtaiened from CDGENPS2 a BI/CUE that in size is exactly as the original ISO. So after popstationed it the result is that the PBP has the same size.
The same with other three game (All with DUMMY file inside) and if I regenerate the ISO including the DUMMY file obiouvsly the output iso doesn't change in terms of size, due I selected all files from souce ISO.
I think that something is missing in the tips. I think that the dummy file need to be removed, and do some actions to make the ISO working after removed DUMMY.
But I tried some test, fixing LBA or filling the DUMMY with a mor comprimable pattern, but the games still not working.
Bye
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From the sound of it, you can't have dual compression, so to speak. Just one or the other.
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sucess rate=0
according to comments on this site
Has anyone been able to load a game succesfully?
Way to go QJ, complete waste of time...
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followed the instructions in this way:
1. dragging image into virtual drive in alcohol 52
2. placed all files to cdgenps2
3. made new iso
4. pushed iso into popstation gui 221 and finally made the eboot.
black screen.
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No good.
Crashes after wanring screen.
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I think the only reason it get smaller is because the bin file contains extra information like music tracks. Doesn’t seem like this is program is removing any dummy files but rather removing the subdata….
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not sure if i can post this but here is magiciso for whoeva needs it...
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unitl some one AT LEAST someone gets it to work this is useless
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And it doesn't load, I only get a black screen. Same with .bin files, the EBOOT is 34 MB big and it doesn't load either.
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Am I doing something wrong?
Also, it helps to remove the dummy file.
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Did Garrett even TEST this on a PSP before handing the tip over? NO ONE has been able to get this to work at all. Neither Eboots nor in PSX on PC emulators it seems. I've also tried a multitude of different directions with a bunch of different games and they all turned out bad.
There might have been a step left out of the tutorial, but I don't believe it. I think this was an untested tip sent in.
In short, This doesn't work at all according to tests done by everyone. Wheres the proof it works?!
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but it doesn't load.
That's kinda crappy.
This doesn't help me at all.
It hangs at a black screen.
LAME!
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wont give it a try... Oo
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honestly dont waste your time
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RE3 Original = 688MB
RE3 Compressed = ~250MB
MSX Original ==100MB
MSX Compressed = 64MB
the problem with both is that I just get a blank dark screen after the warning screen... I hope there is a way to keep these sizes and make them load...
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How long are you going to let people waste their time on this before removing this crap.
It takes a long time to convert you eboot to iso, use this program and then reconvert to eboot
FOR NOTHING...
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has real nifty tools
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This is for any ps1/ps2 image and maybe some similar platform compressions.
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maybe tetris plus worked but it sounds like a lazily made game, a game which is bigger and more complex probably uses the valuable data in the iso thingy itself... i wouldn't try this as i've often come across this kind of thing when trying to back up games before now.
and what's the point if it'll only save 20 megs here or there?
go buy a 2 gig mem card, they're cheap as dirt now (and i'm in the uk! - about 40 quid somewhere), then you can get almost 3 games onto one stick... you can get 3 with the proper compression thing in popstation.
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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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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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1. Open the iso/bin with MagicISO
2. Now you can see the data AND the !!!LBA!!! Information
4. Copy the Data to a new Folder on Harddisk or just drag and drop it to CDGENPS2
5. !!!!!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
6. Make the IMG
7. compress it with pops.
8. play it!
Testet on
- FFVII (old=543MB, newmethod=512MB -.-) works
- FFVIII (old=571MB, newmethod=570MB -_-) works
- Ehrgeiz (old=486MB, newmethod=512MB WTF??!) works
BAM
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BTW I reccomend doing this with games that are drastically larger ISO sizes than game file sizes, you can do this by checking the size of your ISO, opening it with MagicISO, and then looking at the top it should say XXXMB out of 700MB Max, if its drastically smaller this method will do a lot of good, where as larger PS1 games, it does little good.
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Export the tree with ISO buster and import it with CDGEN (after adding the files) this will immediately fix the LBA and the arrangement of the files on the disc...
once again, this method is only useful for smaller PS1 games (seeing as they are still burned to 300+MB media)
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I have tested the method with:
MMX4
MMX5
MMX6
MM8
Tetris Plus
R-Type Delta (to follow QJ's suit)
Gradius IV
FFVII Disc 1
so far have not had any explosive images (getting bigger that is)
Also, the LBA is a very important factor, tetris and the other worked by pure chance (as unbelieveable as that is...)
The next big step:
An all in one program to do the process:
Take the LBA, and the files, rebuild the ISO via the CDGEN method (if we can get our hands on the source, no problem)
and POPS it.
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Thanks for somewhat helping to figure out the problem :)
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ZIP and RAR use a simple process for flagging free space:
bits xx-xx + $FF;
this simply sets a range of data that has $FF written to it.
The compression algorithm for POPS doesnt compress Dummy file(s) free space (which is usually randomized anyway, and they typically cannot be removed either) nor does it do that great of a job compressing free bits in an ISO
I.E.:
Tetris Plus.IMG + 566MB
Tetris Plus EBOOT.PBP (Compression LVL 9) + ~400MB
Tetris Plus stripped ISO + 50MB
Tetris Plus EBOOT.PBP from stripped ISO(Compression LVL 9, Ignore CDDA) + ~6MB-8MB
Tetris Plus EBOOT.PBP from stripped ISO (Compression LVL 9, CDDA)+~50mb
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Medievil
FFVII (Fixed LBA)
MegaMan X4
MegaMan X5
MegaMan X6
MegaMan 8
Tetris Plus
Gradius IV
Crash Bandicoot 3 (fixed LBA)
CTR (Fixed LBA)
the ones with Fixed LBA were tested recently after finding out reconfiguring the LBA might be necisary
if you want the working 6MB tetris eboot and keys.bin e-mail me here:
Z E R O _AT_ G R - P . C O M
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use ISOBuster, and export the data tree using ISO buster, put the files in CDGEN and import the Data tree using cdgen's advanced menu
if you want the proof of a working largely smaller EBOOT.PBP e-mail me:
Z E R O _AT_ G R - P . C O M
TITLE THE EMAIL "EBOOT PLEASE" (without the quotes)
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If QJ reads this, please add a section about fixing the LBA
You can do so with ISOBuster by exporting a Tree File, and then using CDGENPS2's advanced menu to import it (this is 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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com cdgenPS2 =608 mb
Comprimido = 361 mb!!!!!!!!!!!
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No worries. We're hosting both files now.
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Also, try making a "fake" ISO full of null bytes, compression still reduces it to almost nothing.
For your case, I don't really know. This method does strip the RAW data, whereas compression does not. So if you compress something with less data, obviously you're gonna get a smaller file.
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Use either popstrip, or Simple Popstation GUI instead:
http://pspupdates.qj.net/Simple-Popstation-Gui-v2-21-beta/pg/49/aid/78985
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Generic, All-Purpose,
Graphical PSX Ripping guide.
Featuring the PSXLDR Method by TheDragonKeeper
Open PSM Play
Select "Analyze DAO Image" from the File menu.
Browse your computer for the image you just made and select the .bin file
Only check the STR and XA boxes, then hit Start.
When that is done it will ask you if you want to save your data, hit yes. Then for the sake of convenience, put it in the same folder as your disc image.
Now open PSXLDR.
Locate and Open both your image file and psm file.
You should see the raw data on the files that PSM Play found to the left.
Press "Rip All", a message box will pop up when it is finished. Depending on the speed of your computer and the ammount of data that needs to be ripped, this may take a few minutes.
Once that is finished you may close it.
Ok heres where I used PSX2PSP 1.0.7.1 to convert the bin for use with popstation my resulting eboot is 56.1mbs for the game Silent Hill that was a 587 iso, all music works, and game is playable.
I have yet to try this with another game, but if you like silent hill I know it works for that one.
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When I try to fix LBA and change the value, I get a 'Invalid LBA!!'. One of the original LBA files from ISOBuster is 23, but after importing the FileList (which in Notepad is the correct LBA value) I get a w 31xxx value. I tried to change it as mentioned above and then the error pops up. I also manually placed it in CDGenPS2 and still get this error.
What am I doing wrong? Otherwise like 95% of the other readers I too get the black screen of death!
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So, any suggestions for those of us using UNIX operating systems and UNIX derivatives (Linux, Mac OS X, BSD, etc.)?
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If you read some tutorials - making an image for popstation - many people say, they had problems with .iso but with .bin everything was fine. So I just opened my FF7CD1.bin with MagicISO (or with ISO-Buster, it should be like the same).
The LBA Problem is old, cause the homebrew programs for the PS2 allways had to have a special LBA on the started-file. Now if the LBA isnt correct on the PSX Games, its the same! The Emulator just trys to start a File with the LBA, but cant find it, cause a wrong file has this LBA.. understood? xD
So i think the easyest method of correcting the LBA is just changing the order of the files in CDGenPS2. The LBA changes too, because of the order...
Argh my english is bad, but no german site is as good as this one. Thanks for being named in the NewsUpdate ^^
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spiro2: before rip - 490mb(after 9 compression)
After rip - 234mb(after 9 compression)
i also got Disney's Hercules from 239mb to 31.3mb
serious, and they boot fine music also works.
i have had problems when converting back from eboot's to iso's(there wasnt much compression after the psmplay method) so i'm making the bin files from scratch.
i'm testing gta2 right now.
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Ehrgeiz(9 compression) = 485MB
Ehrgeiz(PSMPLAY + 9 compression) = 33MB
now i try ff7
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FinalFantasy7 CD1 + 230MB!!! OMG YAY
Working!
Lets make a List
FinalFantasy7 CD-1(PAL patched to NTSC) working - 230MB
Ehrgeiz (NTSC) working (no music -.-) but only 33MB
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there is no dummie file, he just removed all the music...
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differences from cdgen ps2?
in cdgenps2 you drop the files, and folders gets the start position all the time (23) and .cnf . scus are the last ones.
on the other program the order of the lba, is determined by order of drag and drop files.
cons: cd/dvd gen do iml file and iml to iso make a iso mode 1 file (psx/ps2 games are mode 2 raw 2352) you need to convert with iso2bin to get a mode 2 raw file :(
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PSMplay sucks >.
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i don suggest rip rpg movies
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what happen?
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psmplay method
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This method is only for people the don't care to watch the movies
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Please include a link ti the PSM software. (http://mx.geocities.com/highrojo/archivos/psmplay.zip)
This was linking to an audioplayer.
PLZ HELP!
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And just for the record the only program that works for me on the compression thing is PSX2PSP program and I was able to load all my PSX games with no flaws and no problem!!! Thanks!!
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Compress the iso with this program and blank (or partially blank the videos) or leave them intact.
All audio files will be emptied and so will still be there just zeroed out.
Now decrompress the file you just made, and voila. You are left with an iso just the same size you started with!
Hmm you say, what was the use then?
Compress the iso now with popstation, and you will see the magic that happened.
Using this method with tetris plus I am left with an eboot of less than 8Mb, and I left the video intact!
Good luck, now lets wait for a good way to compress the sound files!
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test silent hill and crash 3.
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Bwhahah with the music of the Tetris Plus, 53MB
Nice try though.
PSMPlay method will work to shrink almost any game (as it removes a LOT of unnecisary files)
However, this method was intended originally to keep the unnecisary files (and thus the original game) intact, including Music
PSM Play method (Can) get(S) rid of XA Audio tracks and also gets rid of ACTUAL DUMMY FILES (I.E. DUMMY.DAT containing random bits, therefore not BEING EMPTY DEAD SPACE)
My method is to remove the DEAD SPACE from the image
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(BTW, anybody wanna gimme tips on where to learn about interpreting ISOs/Bins/IMGs in C++/Java??? if so this woul help)
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http://www.youtube.com/watch?v=SM-PcBnpXWs
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contra 53.2
scrabble 5.19mbs
Intelliqube 23.5
Ill post back with more that work and there sizes.
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tried it with the only game i have
Diablo 625mb -> 331mb
the game has full sound and music!
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and whoever said up there think it was "atownaction" ..that is completely different thing.. we are removing "dummy" files from the images.. not compressing not to be mean but.. speaking of "dummy" files, think you should "remove" your rude comment from the page, Dark_aleX is the man but.. give this guy (Garret/Zero-x) credit for what he's trying to do. ..jerk
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(I did not use CDGEN!)
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Thanks man, it helps to have some positive reinforcement, even though everyone else has shot this down, it *IS* a working method, it just appears that i have a lot of kinks to work out before I get it 100% working..
@RK:
E-mail me with the adress plastered all over this thing (yah, the whole ISO discussing thing does kinda shoot me down, as I semi-posted the link to the tetris eboot.. but not really, I just hinted at where it might be located on a certain server lol)
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As far as I know, any program that can modify the LBA (which there are several Unix/MacOS based aps that can) should work
Also, Its not that I am unregistered, I am registered in forums as Zero-x, and if people want to Defame me, or flame me, or bring hell to my name, they can go ahead, I released this because I needed to find problems with it, which I was unable to myself, thats part of the deving process, trial and error.
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Ripping ISOs of your OWN GAMES is NOT ILLEGAL:
That is considered a software backup, which you are entitled to by end-user rights, This was not the case with ripping Cartridge based system as a lifetime warranty on the chips and battery inside them was offered, however with CD-based media, no matter how well kept a CD is, it could very easily go downhill, providing a way to backup the game is not illegal, however there is no method of which to play that game that is legal (technically modchips arent illegal though...)
Anyway, Thanks for supporting me (those who did)
And to those who doubt my method, I still stand by it, and will eventually work out EVERY ISSUE WITH IT! (And will stick by and continue finding the way to get thru to the goal with my method!)
As far as the illegalities of some of the things I may or may not have posted:
One: Unregistered user, that MAY or MAY NOT have been me
Two: Tetris Plus is owned by a now defunct company "Jaleco" which to my knowledge wasn't the original owner of tetris anyway. the concept of Tetris is intellectual proper of the Tetris orginization, which actually has no copyrights on any but the first Tetris games code. Technically the Tetris Plus game has no copyright attatched to it anymore, thus why I decided to offer it publically as the game is no longer being manufactured, and the game is not owned by anyone.
Software Piracy is the STEALING of software that you do NOT LEGALLY OWN A COPY OF.
Anything else (ripping, burning, etc.) is legal, its jsut COPYING your own Software
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I havent tried this, but from reading everyones' comments about it not working, I am probably not going to try it.
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normal method = compressed to 180mb iso, black screen.
manually editing LBA values in CDGEnPS2 = 1gb iso, compresses to 160mb, but i got a black screen.
using file tree export/import = 470mb, compressed to 230mb, black screen.
i'm now stuck and puzzled. btw, there were read errors from the ISO. i had to ignore them. (i extracted the ISO from the original eboot that worked, which was around 270mb.)
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