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It must be run in MS-DOS mode. Indy Car Racing makes incorrect assumptions about the system memory configuration when Windows 95 is running, causing it to believe the computer has a negative amount of memory. It must be run in MS-DOS mode. Inferno moves an active data segment which results in a system hang if that data segment is needed while it is being moved. This problem may be alleviated if you run Inferno in MS- DOS mode.