VirtualBox最早是德国一家软件公司InnoTek所开发的虚拟系统软件,后来被Sun收购,改名为Sun
VirtualBox,在Sun被Oracle收购后现改名为Oracle VirtualBox.因为他是开源的,不同于VM,而且功能强大,可以在
Linux/Mac 和 Windows 主机中运行, 并 支持在其中安装 Windows (NT
4.0、2000、XP、Server 2003、Vista)、DOS/Windows 3.x、Linux (2.4 和
2.6)、OpenBSD 等系列的客户操作系统.假如你曾经有用过虚拟机软件的经历的话，相信使用 VirtualBox
不在话下。即便你是一个新手，也没有关系。VirtualBox 提供了详细的文档，可以助你在短期内入门。
 下载:VirtualBox 4.0.8
VirtualBox 4.0.8 (released 2011-05-16)
This is a maintenance release. The following items were fixed and/or added:
- Mac OS X hosts: fixed incompatibility with recent Mac OS X versions in 64-bit mode (bug #8474)
- Mac OS X hosts: fixed incompatibility with hosts with more than 16 cores (bug #8389)
- Mac OS X hosts: fixed painting corruptions on a second monitor in 64-bit mode (bug #7606)
- GUI: restored functionality to set an empty host key to disallow any host key combination (4.0.6 regression; bug #8793)
- VBoxManage: added controlvm screenshotpng subcommand for saving the screenshot of a running VM in PNG format
- VBoxHeadless: fixed potential crash during shutdown (Windows hosts only)
- NAT: built-in services use the correct Ethernet addresses in Ethernet header and in ARP requests
- Host-only networking: fixed adapter reference counting
- E1000: fixed rare guest crashes with Linux SMP guests (bug #8755)
- SATA: fixed guest disk corruption under rare circumstances (only relevant for guests with more than 2GB RAM; bug #8826)
- Storage: fixed data corruption after a snapshot was taken with asynchronous I/O enabled (bug #8498)
- Floppy: several improvement
- HPET: another fix for time jumps (bug #8707)
- USB: removed assumption that string descriptors are null-terminated (Windows hosts only)
- 3D support: fixed a potential crash when resizing the guest window
- 3D support: fixed GNOME 3 rendering under Ubuntu 11.04 and Fedora 15
- Snapshots: fixed another bug which could lose entries in the media registry when restoring a snapshot (bug #8363)
- Shared Folders: don't stop mounting the other valid folders if one host folder is inaccessible (4.0.6 regression)
- Linux Additions: check whether gcc and make are installed before building kernel modules (bug #8795)
- Solaris Additions: added support for X.Org Server 1.10
- Guest Additions: fixed inappropriate Guest Additions update notification when using vendor-specific version suffixes (bug #8844)
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