QEMU is the packages for linux. QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Qemu is an alternative to VMWare. QEMU has two operating modes: Full system emulation. In this mode, QEMU emulates a full system (for example a PC), including a processor and various peripherials. It can be used to launch different Operating Systems without rebooting the PC or to debug system code. User mode emulation (Linux host only). In this mode, QEMU can launch Linux processes compiled for one CPU on another CPU. It can be used to launch the Wine Windows API emulator or to ease cross-compilation and cross-debugging. On debian you can istall QEMU for installing Microsoft Windows. So Windows can run inside Debian.
For Further you can try to install QEMU to your Debian Machine, this is the step to install QEMU and also Installing Microsoft Windows. Enjoy It.
install QEMU QEMU On Debian Wiki |