alright, so here's the situation: I have a 1TB Toshiba External HDD, model # PH3100U-1EXB. My system is set up according to the guide at http://gbatemp.net/index.php?showtopic=171901 Every time I try to get into any usb loader program I get the Exception (ISI) code dump. My HDD has a Virtual CD in CDFS format that cannot be deleted, and I've tried formatting it through windows, partion wizard and GPARTED, including some other small apps. The Virtual CD is likely the cause of this. Here is what I've done in attempts to fix this: Tried NeoGamma, USB Loader GX, Custom USB Loader, uLoader with a WBFS formatted partition and a FAT32 formatted partition. I separated that partition using partition wizard. NeoGamma just does nothing, USB Loader GX crashes upon loading when hard drive is plugged in, custom usb loader crashes upon loading hard drive, and uLoader gives me a different error, but I don't recall what that was. And yes I've used Custom USB Loader in FAT mode with 222 as well. And I tried partition = FAT1 and partition = FAT2 within the config.txt of Custom USB loader. And yes the plug is in the correct usb slot. I've also tried hiding my main partition on the hard drive, removing the letter, setting the game FAT32 partition to Active/Boot. It's also not set to logical but primary. So that's probably about all I've done.. I can't think of what else. Let me know what you think.