Does anyone know what would cause a file system error when running applications from 2 different OS's on the same drive? In other words, I'm trying to run some Steam games under 7 that were installed using XP. I have the reg settings all imported and Steam works fine but after a minute or so they all crash to desktop. I go into the Event Viewer and it states that the file system is corrupt. Even if i boot back into XP, chkdsk runs, but then the games work fine running in XP. Thoughts?