QUOTE(dcapper1 @ Apr 28 2012, 01:44 PM)

I did try that but Xplorer hung up at the end of the load. I don't need any of the data on either drive. I just need any 360 to see it so I can format it.
Yeah I understand. There are other programs like it too like Modio you can try. Try a full format of NTFS or FAT32 on the 20gb first. Not just a quick format, at lease one full pass over with a low level formatting tool. Maybe the 360 will see it then, but it's a long shot. I've had that fix hard drive detection problems for me in various other devices in the past.