dual boot

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dual boot

(operating system)
Any system offering the user the choice of two operation systems (OSes) under which to start a computer. A dual boot system allows the user to run programs for both operating systems on a single computer (though not simultaneously). The term "multiple boot" or "multiboot" extends the idea to more than two OSes.

The OSes are generally unaware of each other's existence. They are installed on separate hard disk partitions or on separate disks. They may be able to access each other's files, possibly via some extra driver software if they use different file systems.

The OSes need not be completely different - they might be different versions of Microsoft Windows (e.g. Windows XP and Windows NT) or Linux (e.g. Debian and Fedora).

A dual boot system differs from an emulator such as vmware, which runs one or more OSes "on top" of the primary OS, using its resources.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

dual boot

A computer with two operating systems. At startup, a boot manager program lets the user choose which one to load. "Multiboot" may refer to a dual boot system or to hosting more than two operating systems.

All the Boots You Ever Wanted
System Commander from V Communications was a boot manager that let you install multiple operating systems.
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References in periodicals archive ?
A more cost-effective, and less stressful, dual boot option is simply to add a second hard drive to your computer and install Linux there instead of spending money on software.
Just recently, Micromax announced a new tablet called the Canvas Lap Tab which dual boots on Windows 8 and Android 4.2.2 Jelly Bean.
Information technology/software consultants overview Tiger's parentage, and how it has replaced the need for dual boot systems for Windows and Linux partitions, e.g, in running the Apache web server with Abode Photoshop.
Model Micromax LapTab Display 10.1-inch LCD screen with1280x800p resolutions OS (Dual boot options) Android Jelly Bean OS (version yet to ascertained) and Windows 8.1 Processor Intel[R] Celeron[R]N2805 processor with 1.46GHz CPU speed RAM 2GB Storage capacity 32GB flash memory, expandable up to 64GB Camera Front: 2.0-megapixel camera with light sensor Battery 7400 mAh Add-ons Predictive text feature, Bluetooth v4.0, Wi-Fi (802.11 b/g/n; dual-band :2.4GHz & 5GHz), Micro-USB v2.0, stereo speakers, built-in microphone,*** microSD slot Weight 580 g (with keyboard) Colour Black Price Under $500 (less than a[sup.1]30,000)
* Dual Boot OS - Android 4.2.2 Jelly Bean and Windows 8.1
I first had to decide how I was going to install the OS as I had a number of choices: was I going to install it as a dual boot system alongside Windows 98 or should I install it as a standalone system....
The laptops will come preloaded with Windows 7 operating system, and the Microsoft Office Pro Academic Version 2010, with the additional option to run the Ubuntu operating system in dual boot mode.
The manufacturer rated battery life is pegged at upto 8 hours, but one of the most interesting features is that the Acer Aspire One Happy 2 netbook offers consumers a dual boot between Windows 7 starter and Android.
If everything goes right then Microsoft could break into the smartphone market with its own twist or maybe dual booted devices may become a thing for power users.