主机是：win7 64位； 采用的oracle vm版本是4.3.26 在安装win server2012 64位时，出现错误，如下： log文件头如下： virtualbox vm 4.3.26 r98988 win.amd64 (mar 16 2015 17:35:35) release log 00:00:12.987610 log opened 2015-03-29t04:07:42.653057000
主机是：win7 64位；
采用的oracle vm版本是4.3.26
在安装win server2012 64位时，出现错误，如下：
log文件头如下：
virtualbox vm 4.3.26 r98988 win.amd64 (mar 16 2015 17:35:35) release log
00:00:12.987610 log opened 2015-03-29t04:07:42.653057000z
00:00:12.987641 build type: release
00:00:12.987649 os product: windows 7
00:00:12.987653 os release: 6.1.7601
00:00:12.987656 os service pack: 1
00:00:13.508348 dmi product name: latitude e6440
00:00:13.535098 dmi product version: 01
00:00:13.535140 host ram: 4001mb total, 1428mb available
00:00:13.535146 executable: d:\programs\oracle\virtualbox\virtualbox.exe
00:00:13.535148 process id: 3976
00:00:13.535150 package type: windows_64bits_generic
00:00:13.573532 installed extension packs:
00:00:13.573826   none installed!
00:00:13.611349 uimediumenumerator: medium-enumeration finished!
00:00:15.069726 sup: loaded vmmr0.r0 (d:\programs\oracle\virtualbox\vmmr0.r0) at 0xfffff8800d40c000 - moduleinit at fffff8800d42b770 and moduleterm at fffff8800d42ba80 using the native ring-0 loader
00:00:15.069939 sup: vmmr0entryex located at fffff8800d42ccb0, vmmr0entryfast at fffff8800d42be00 and vmmr0entryint at fffff8800d42bdf0
00:00:15.070016 sup: windbg> .reload /f d:\programs\oracle\virtualbox\vmmr0.r0=0xfffff8800d40c000
00:00:15.107390 guest os type: 'windows8_64'
00:00:15.136482 fhmforced=true - 64-bit guest
00:00:15.244876 file system of 'c:\vm' (snapshots) is ntfs
00:00:15.244997 file system of 'c:\vm\win64server2012.vdi' is ntfs
00:00:15.259162 file system of 'h:\soft\os\windows server 2012 r2-9600.17050.winblue_refresh.140317-1640_x64fre_server_eval_zh-cn-ir3_sss_x64free_zh-cn_dv9.iso' (dvd) is ntfs
00:00:15.747533 shared clipboard mode: off
00:00:15.930334 drag'n'drop mode: off
00:00:16.434368 ************************* cfgm dump *************************
---------------------------------------------
这个错误怎么解决呢？？？？方法如下:开启 vbox 对 cmpxchg16b cpu 指令的支持
http://bbs.pcbeta.com/viewthread-1362507-1-1.html
virtualbox安装windows 8.1或者windows server 2012 r2，出现0x000000c4错误，解决方案如下：
（1）命令行下， 运行下面代码，找到vm名称，通常是大括号及其内部内容：c:\program files\oracle\virtualbox\vboxmanage.exe  list vms
（2）然后在命令行下运行下面的代码，记得先将[vmname]替换为vm名称：
c:\program files\oracle\virtualbox\vboxmanage.exe setextradata [vmname] vboxinternal/cpum/cmpxchg16b 1
即： vboxmanage.exe setextradata {ffb15241-d261-48ab-8ed2-e6c6a1948c7a} vboxinternal/cpum/cmpxchg16b 1