Compressed ISOs?

[grim1234]

I took a ripkit from advance power.de and used it on my infected iso file (562mb).

The ripkit generated a 182mb iso file. When extracted this file was 233mb.

I then made my own rip of the game, with files of 214mb. When made into an iso with UMDGen, the iso totaled 214mb.

Why is the iso so much smaller than the extracted files from the ripkit?

Did the ripkit use compression when building the iso?

If so, how can I use this to make smaller isos?

Thanks to anyone who can help.

G.

ps - am i allowed to name the ripkit directly?

[junkmate]

i had a previous topic with this exact same title. Its not in fact compression, its 'relinking' of identical files to one master copy.

so, for example, in some games they have many languages, when all you need is one, so you 'relink' all the french, spanish, german files to all point to the english file - so when the ISO is read, it looks like all the files are there, but in fact they are just pointers to the one master file (english language file in this case).

another example is to take all of the music tracks, and relink them all to your favourite track, so that no matter what music track is being played, it will link to your favourite and only play that one - this gives the same effect as dummying all music tracks but one to 0kb.

when you extract this iso - it will in fact extract all of the copies, and so will have a larger size when extracted.

this can be achieved easily with the new UMDGENERATOR 1.02.

[grim1234]

great!

how can i do this? just use standard windows links? Or something else?

Thanks,

G.

[Master05]

Download UMDGEN from www.umdgen.com and see the readme´s of the games etc...

[wiggim]

Sometimes I wish the PSP had a faster clock, say something around the region of 1GHz so it might be possible to play ISO's in a zipped format. Oh well, 333 might work, but it would probably be very slow.