Headless mode: by default we will be keeping the full mode enabled, but you can change this set up for all the new work units checking your project preferences. If you edit the preferences you will see a new option that says: Run virtual machine in headless mode: no. Change it to true, click update in your BOINC Manager button, and restart BOINC. From that moment the VM should be running in headless mode.
好像是说可以在无键盘和无鼠标下运行虚拟机《http://www.server120.cn/article/1/2009/200905197978_7.html》