在kvm中安装完Sierra之后，使用起来明显不如在virtualbox中安装的OSX系统顺滑，而且不能识别共享过去的U盘，iphone之类 的，原因可能是qemu的usb controller实现在mac os系统中没有相应的驱动，所以实际上还是virtualbox里用得舒服。

找出原来写的一个virtualbox安装mac的过程，懒得翻译了，内容都来源于这个github repo 实践整理了一下过程，生成可安装的iso和第四步设置virtualbox的一些参数是关键，安装之后可以共享U盘，iphone，鼠标可以直接在host和虚拟机 的mac os桌面间移动，不得不说比qemu使用起来还是方便得多。

some tricks should be done for installing osx system in virtualbox.

  1. using an existing osx system to convert install xxx.app to iso download the build script here: https://github.com/geerlingguy/macos-virtualbox-vm

  2. set up a new vm in virtualbox ->1 select type “mac os x”, version: newest or corresponding version ->2 harddisk size should set to be large enough eg: 70g

  3. set up the builded new vm ->1 memory,video memory 128M, num of cpus

  4. run these command seperately in terminal one by one(should not using script, I tried, ended in errors): vboxmanage modifyvm “VM Name” –cpuidset 00000001 000306a9 00020800 80000201 178bfbff vboxmanage setextradata “VM Name” “VBoxInternal/Devices/efi/0/Config/DmiSystemProduct” “MacBookPro11,3” vboxmanage setextradata “VM Name” “VBoxInternal/Devices/efi/0/Config/DmiSystemVersion” “1.0” vboxmanage setextradata “VM Name” “VBoxInternal/Devices/efi/0/Config/DmiBoardProduct” “Iloveapple” vboxmanage setextradata “VM Name” “VBoxInternal/Devices/smc/0/Config/DeviceKey” “ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc” vboxmanage setextradata “VM Name” “VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC” 1

  5. start vm and choose iso file build in step 1,run and install.

    Run the following VBoxManage command:

    VBoxManage setextradata “[VM_NAME]” VBoxInternal2/EfiGopMode N

Replace [VM_NAME] with the name of your Virtual Machine. Replace N with one of 0,1,2,3,4,5. These numbers correspond to the screen resolutions 640x480, 800x600, 1024x768, 1280x1024, 1440x900, 1920x1200 screen resolution, respectively. 7. enjoy!