PSP dumping

[iR0b0t]

Its probably okay to add the merged dumps, but please comment both separate partitions as well if you are going to add those.

[Enker]

Are the three yellow dumps going to be marked as Red status or are we keeping those entries?

[iR0b0t]

https://redump.info/discs/system/psp/status/3/

They lack of video partition if that's correct. Can be set to red.

[Enker]

The entire video partition is just random data in the dump I checked "UCJB-98302", so I will set them to Red status.

[tossEAC]

https://redump.info/disc/52119/

I am sure this is still a bad dump, unless when you open the iso in isobuster, and all the files have the proper LBA and file sizes, like I said I don't think joining 2 isos gives you a good dump. It didn't with my umd I tried.

The iso that gets added to the join second doesn't even get seen if you no what I mean.

[user7]

Seems like keeping the tracks separate would be more accurate... at least we know the two tracks are perfectly dumped (even if additional data would need to be added later).

[Enker]

We can use the split tracks if the UMDs are found to be formatted that way. I think it's most likely all on one track, but maybe UMDs have a special mode to deal with two tracks.

[user7]

Can someone who speaks Japanese reach out to the PSP Filer dev asking if he would take on this challenge of dumping these types of discs? His contact info is here http://www.geocities.jp/mediumgauge/

Basically just translate this message and send:
"Hi, thanks so much for your great app PSP Filer!

We're dumping discs for redump.org preservation project. We preserve PERFECT dumps of discs for our dat.
We use PSP Filer as a rule for all our PSP dumps because the app dumps all game UMDs perfectly. However there are a few oddities which we are unable to dump perfectly with PSP Filer because they have video partitions, such as the Stealth movie / WipeOut demo combo disc http://www.mobygames.com/images/covers/ … -cover.jpg
Also "Demo Disc for PSP Vol. 1" has this partition as well.

As of right now there is no known "PERFECT" way to dump these discs. Would you be willing to update PSP Filer to handle these situations so we can perfectly preserve these discs?

Thanks for your time "

[Jackal]

IIRC PSP dumping is different from normal dumping. Instead of reading a range of sectors, the PSP is accessing the data through the filesystem.. So the last sectors of a PSP dump could be erroneous and some tools are known to create bad dumps. I don't think the PSP Filer developer can do anything about this, because he's restricted to what the PSP allows? Maybe there are any optical drives that can be hacked/modified into reading UMD discs?

[sarami]

https://web.archive.org/web/20130719120 … iller.html
Does anybody have the source code of UMD Killer PRX EDITION V1.5?
I want it because I haven't understood how to dump the disc in the kernel mode.