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Translated：20150402 The VirtualBox 5.0 beta is finally here
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The VirtualBox 5.0 beta is finally here
=======================================
**Oracle's desktop virtualization software gets its first major point revision in almost five years, but the changes are more evolutionary than revolutionary.**
VirtualBox, the open source virtualization system originally created by Sun and now under Oracle's stewardship, has released its first revision to the left of the decimal point in nearly five years.
Don't expect anything truly revolutionary, though, judging from the release notes for and the behavior of the beta itself. With this release, VirtualBox picks up a bit more polish, both visually and technologically, but its main advantage over VMware remains with its offer of a free incarnation of many of the same core features.
The last major version of VirtualBox 4.0 was released in December 2010, and it delivered a heavily reworked version of the program with a new GUI, new virtual hardware, and a reorganized project design. But the pace of major releases for the project was slow, with the last major release (version 4.3) arriving in late 2013. Everything since then has been officially designated as a "maintenance" release.
**VirtualBox 5.0**
*The first beta of VirtualBox 5.0 adds features like the ability to edit the menus and shortcut icons for VM windows, as shown here.*
Among the biggest changes for VirtualBox 5.0 is support for more instruction set extensions that run with hardware-assisted virtualization. The AES-NI instruction set, typically used for hardware acceleration of encryption, and the SSE 4.1 and SSE 4.2 instructions sets were included among them. Also new is paravirtualization support for Windows and Linux guests, a new architecture for abstracting host audio, and support for USB 3 (xHCI) controller in guests.
Most of the usability updates are improvements to the VirtualBox GUI. One big change is the ability to customize the menus and the toolbar for individual virtual machines so that little- or never-used options can be removed entirely. Another major addition is the ability to encrypt virtual volumes from within the VirtualBox interface, rather than relying on the guest OS's own disk-encryption system (assuming it has one).
Oracle warns that this is beta software and should be treated accordingly. Sure enough, the main GUI and the guest OS windows all sport black-and-red Beta warnings in one corner. But a Windows 10 VM created with the previous VirtualBox release (4.3.26) booted and ran fine, and the 5.0 version of the VirtualBox Guest Additions -- for better video support, bidirectional copy and paste, and other features -- installed without issues. (Fixes to better support Windows 10 have been showing up since version 4.3.18.)
No word has been given yet on when the final version of 5.0 will be out, but Oracle [encourages users][1] to download and try out the beta -- in a nonproduction environment -- and file bug reports with their [beta feedback forum][2].
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via: http://www.infoworld.com/article/2905098/virtualization/oracle-virtualbox-5-0-beta-is-finally-here.html
作者：[Serdar Yegulalp][a]
译者：[译者ID](https://github.com/译者ID)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
[a]:http://www.infoworld.com/author/Serdar-Yegulalp/
[1]:https://forums.virtualbox.org/viewtopic.php?f=15&t=66904
[2]:https://forums.virtualbox.org/viewforum.php?f=15

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VirturalBox 5.0 beta版终于发布了
=======================================
**甲骨文公司的桌面虚拟化软件获得了近五年来的第一次重大改版，但是更像是改进而不是革命性的的变化。**
VirtualBox，由Sun公司创建，现在由甲骨文管理的开源虚拟化系统，获得了近5年来第一次的主版本更新发布。
从发行说明和测试版本身的表现来看，别期望任何真正革命性的改变。在此版本中，VirtualBox在视觉上和技术上都做了一些改进，但和VMware相比，它的主要优势仍然是相同核心功能的自由化。
VirtualBox 4.0的最后一个主要版本在2010年12月发布，它采用了新的图形化用户界面，新的虚拟化硬件和重组的项目设计，带来了重大的改版。但项目主要版本的发布步伐缓慢，上一次重要版本(版本4.3)在2013年底才发布。从那时起，一切都被正式称为“维修”发布。
**VirtualBox 5.0**
*VirtualBox 5.0的第一个测试版增加了编辑菜单，VM窗口的快捷方式图标等功能，如下面所示。*
VirtualBox 5.0最大的变化是增加了对硬件辅助虚拟化指令集扩展的支持。AES-NI指令集通常用于加密时的硬件加速，SSE 4.1和SSE 4.2指令集都包括在其中。另外一点是支持Windows和Linux客户机的半虚拟化，一个抽象主机音响的新的架构以及支持客户机中的USB 3（xHCI）控制器。
大部分可用更新都是对VirtualBox 图形化用户界面的改进。一个大的变化就是支持给单个虚拟主机自定义菜单和工具栏，这样很少或者从不使用的选项就可以彻底删除。另外重要的一点是可以在VirtualBox接口内部对虚拟磁盘进行加密，而不依赖于客户机操作系统自身的磁盘加密功能(假设有的话)。
甲骨文公司提醒由于这是个测试版软件，需要谨慎对待。当然，主界面和客户机系统界面在某方面都可能引起红黑测试版警告。但之前VirtualBox发行版(4.3.26)上创建的Windows 10虚拟机启动和运行都没问题，5.0版本中添加的VirtualBox客户机功能--更好的视频支持，双向复制和粘贴，以及其它功能--安装的时候也没有问题。(更好地支持Windows 10的修复从4.3.18版本后就开始出现)。
虽然没有明确指出5.0的最终版什么时候会发布，但是甲骨文公司[鼓励用户][1]在非生产环境中下载和使用测试版，并在[测试版反馈论坛][2]中报告bug文件。
--------------------------------------------------------------------------------
via: http://www.infoworld.com/article/2905098/virtualization/oracle-virtualbox-5-0-beta-is-finally-here.html
作者：[Serdar Yegulalp][a]
译者：[ictlyh](https://github.com/ictlyh)
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
[a]:http://www.infoworld.com/author/Serdar-Yegulalp/
[1]:https://forums.virtualbox.org/viewtopic.php?f=15&t=66904
[2]:https://forums.virtualbox.org/viewforum.php?f=15