This USA game is listed as compatible in the hdloader database/wiki, but I have had a weird experience and I'm not sure if it's problematic or not.
I just tried to install the game to my HD from a brand new, fresh out of the box Katamari without a speck of dust or nary a scratch on the thing. The disc loads up to 99%, then pauses for several seconds. Once things startup again I am told that there are errors in the installation and asked if I wanna continue the install or not, with a warning that selecting Yes might result in a game that doesn't work.
The first time this happened, I just selected yes. As the window closed and I could see the status behind it, I saw 16 errors total, and the progress bar along the bottom seemed stuck at 99%. No control ever seemed to return to me at this point so after a few minutes without seeing the yellow light from the HD turn on, I just powered down.
I tried running Katamari Damacy and it did in fact work, but I didn't play the game, I just poked around a bit to see if it functioned. I returned to the Toxic OS and deleted the game and tried reinstalling, this time to the same error after which I selected No to complete the install. Control was returned to the interface immediately but of course, no Katamari install for me then.
That was when I came here to consult the database and I see no notes of errors or weirdness for K.M. in the database. Is there a trick to installing this sucker that won't glitch out? I don't like seeing error messages as my Toxic OS experience has otherwise been great.