(PSP) CISO or another iso>cso converter?

[sleve_mcdichael]

I see there is UMDGen for Windows but I'm looking for something I can run on my Raspberry Pi 4. CISO has an Ubuntu package but not a Debian one. I found this tutorial which says to download a .deb file and then install it with apt. Is this safe? Will it work? Is there another/better way to get CISO, or another command-line tool that will work on Pi 4?

https://www.junian.net/tech/psp-iso-to-cso/

[windg]

I test it on Rasbian Bullseye 32 bit and it is working fine. Very nice tool, thanks!

[sleve_mcdichael]

@sleve_mcdichael said in (PSP) CISO or another iso>cso converter?:

Is this safe?

Looks like probably yes. I also found the file listed on https://packages.ubuntu.com/focal/armhf/ciso/download. I don't see where to actually download it from this page, but the md5sum given there does match the file downloaded from the other source. This looks like a rather official source, even if I don't know what Launchpad Librarian (the other one) is.

Will it work?

Also, probably yes. It does run. I compressed two ISOs with ciso on my RPi, and also with umdgen on my PC, and compared them.

For one game, the CSO made by ciso and the one made by umdgen, were identical (yay!), and on decompressing, the output ISO was also identical to the original.

For the other game, the CSOs were different, but they both worked.

On decompressing, they came out still different, but they also both still worked. The one that was made by ciso, when decompressed by ciso, was identical to the original source ISO (yay!). But the one that was initially made by umdgen, when decompressed by ciso was different than the original, but it did still work.

I got about 20% savings overall (10% on the big one and 45% on the smaller one.)