The big claim of Win4Lin is speed. The program doesn't start a virtual machine, but instead runs a DOS environment by translating Windows operations to Linux operations using hooks in the kernel. W4L is definitely a program for the more experienced Linux user, but its speed claim is justified. I admit to not being someone who enjoys patching the Linux kernel, but I have gotten Win4Lin working with a fair amount of tweaking and swearing. When the program is installed and working, running Windows is pretty easy. Because a copy of Windows is running, getting your favorite Windows programs to work isn't too hard. There are limitations to Win4Lin's speed demon approach. With DOS running, you can use only Windows, 95, 98, or Me. They are working on supporting newer versions of Windows, but I'm sure that requires great changes to the program. You need a copy of Windows to install, and, yes, you should have a legal copy of Windows. If you are a person who tends to update the Linux kernel yourself, you are dependent on the company that makes Win4Lin, NeTraverse, for kernel updates to keep running Win4Lin. One of the bigger limitations in Win4Lin is that the program lacks DirectX support. That means no games or multimedia applications for you with W4L. Finally, and this might not be a limitation as much as it is a consideration, Win4Lin is a commercial program that you have to buy. On the bright side, besides the speed with which Win4Lin runs, you can count on the program to reliably run many Windows programs. Supported programs include these:
Win4Lin also supports sound playback and Windows networking. With the graphical installer, speed, and reliable performance, W4L is a good program for moderate to advanced Linux users.
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