Can I use two OSes on the same computer at the same time?
There are two systems on the computer. To do this, you need to create another partition on the hard disk. Two systems cannot be launched simultaneously at once, and you can download any of them at will at any time.
And two systems operating simultaneously can be implemented using one of them as a virtual one. To do this, a program is installed on the computer - for example, Virtual Box. Any system can be installed in this program. I installed mainly to see what is, say, Linux Mint, Ubuntu or another OS. But it turned out from this virtual system and to go to the Internet - it's even safer: caught a virus - deleted the virtual system. And no viruses!
The disadvantage of such programs is that they take away from a real computer a part (maybe up to half) of RAM. And it is not always possible to create a shared folder and connect a USB flash drive to the virtual system.
You can install two OSes on one computer, but installing on one local disk is not realistic, unless on another local disk, for example, on a local disk D - but you can't use it at the same time, if only in turn - you have to turn it off / on / reboot anyway computer to switch to a particular system.
For example, on XP or Semrka - when you boot your computer, you need to select the action of the system that you want to use.
In general, if you have a desire to use, in this way - you can install another operating system during installation, on another disk - you can independently (if you have experience), you can use a wizard - a programmer.
I for example have Linux and Windows. But I choose the axis when loading and I think it is very convenient. And I wonder why you need to work at the same time in two different windows, what needs to be done so that we need say the seven and xp at the same time.
The simultaneous use of several operating systems on one computer is possible using virtualization mechanisms. Most processors now support a hardware-specific hypervisor mode that allows it to be done without significant performance degradation. In the simplest case, there is a host system on which a program like VMWare or VirtualBox is installed, which emulates a computer with its own hardware resources (processor, memory, disks, input-output devices, BIOS or UEFI, bootloader, etc.), being from the point of view of the host system as a normal process (while a module is running in the OS kernel that provides interception and processing of privileged instructions in the hypervisor mode, and if there is none, then command-by-command emulation, which is very slow).
There is another approach to virtualization that is commonly used on servers: a special OS, called the hypervisor, ensures that several OSs simultaneously execute as their processes, distributing machine resources between them and protecting them from each other. In addition, each of these processes has direct access to the processor core mode, but does not have access to the hypervisor mode, so performance is almost not reduced.
You can use two operating systems, but not simultaneously, but in turn.
I have Windows 7 installed on drive C.
On disk D, I have a happy UBUNTU dwelling, which I don’t want to part with, because it rescued me more than once, even when I used XP sometimes let me down.
When you turn on or reboot, you are asked which of the two OS I prefer to boot - and that's it. No problem.
Yes you can. You can install two or more operating systems on one computer. So if you, for example, wanted to have two operating systems on your computer: Windows xp and Windows 7, then you will need to carry out some manipulations with the logical hard disk using various programs. Details on this process are described here. After installing two operating systems, at the initial stage of loading you will see the choice of operating system. But at the same time to use them, unfortunately, it is impossible.
it is possible, using "virtualization" - a separate software that allows you to run another one of interest (or several) on an already working operating system.
Allow this program:
- VMware Workstation from VMware
- Virtual PC from Microsoft
- VirtualBox from Oracle