I have downloaded the source code of bochs. and I use make install command to install it onto my box. But how could I uninstall it? I run the sudo apt-get remove bochs, but it said I didn't install the bochs...
You'll need to do something like:
when you haven't used the package manager to do the original install.
It's worth using CheckInstall in future so that you can use your package manager to uninstall.