On Windows XP with SP2, coLinux versions before 0.7.1 crash your system. This happens on new CPU's with hardware support for noexecute. To solve this problem, you should modify your file C:\BOOT.INI, the line after operating systems and change options to /noexecute=AlwaysOff /NOPAE. This has no side effect for your running system (except breaking important protection against security exploits). All your other programs will continue to work. Your PC runs as if the processor does not have this feature. Modifired BOOT.INI: bcdedit /set nx AlwaysOff bcdedit /set pae ForceDisable