virtualbox xp 开启双核

本身的机器配置不是很高，运行虚拟的wes7仍是以为很占用资源。决定回归virtualbox的xp。

但sp3的版本识别不了双核，网上说的配置方法都尝试过仍是不行。

后来搜到海外的一个帖子

http://superuser.com/questions/348741/virtualbox-xp-guest-does-not-see-multiple-cores-multiple-processors

其中有一段说法： 

 

I had a similar issue, and I stumbled on this: http://www.nforcershq.com/forum/updating-the-hal-for-multiprocessor-support-t70331.html

I downloaded the devcon utility from Microsoft and issued these commands:

1. devcon sethwid @ROOT\ACPI_HAL\0000 := +acpiapic_mp !acpiapic_up
2. devcon update c:\windows\inf\hal.inf acpiapic_mp

Then I rebooted and now XP can see all 4 cores.

Make a backup of the image before starting in case the system won't boot anymore!

 微软的devcon很难找了，在一些下载网站上找一下仍是能够看到的。http://www.cr173.com/soft/42830.html