1. First you need to Install DOSBox (recommended version 0.73)
2. Create a folder, for example "Turbo" in any drive (example- C:\Turbo\)
3. Download and extract TC into that "Turbo" folder (C:\Turbo\)
4. Run the DOSBox.
5. Type the following commands at the command prompt [Z]: mount d c:\Turbo\ [The folder TC is present inside the folder Turbo]
Now you should get a message which says: Drive D is mounted as a local directory C:\Turbo\
6. Type d: to shift to d:
7. Next follow the commands below:
cd tc
cd bin
tc or tc.exe [This starts you the Turbo C]
8. In the Turbo C goto Options->Directories-> Change the source of TC to the source directory [D] ( i.e., virtual D: refers to original C:\Turbo\ . So make the path change to something like D:\TC\include and D:\TC\lib respectively )
