It would be theoretically possible to do it all in user-land (needing no direct kernel access), but for an arbitrary OS to work pretty much absolutely everything including the CPU would have to be emulated so it would be very very slow compared to bare metal. Think DOSBox and similar.With changes to the guest OS it gets better: more can be done relatively native. Have a look at 'user mode linux' for a good example of that There were attempts to make this work under Windows but I think those projects died pretty quickly as people just used kernel mode vitualisers instead for efficiency so there wasn't massive interest (cooperative Linux is somewhere between: it works in a similar manner to UML but requires admin access). Portable software as a general rule is written in poor languages. That would actually be very easy to create. Most Linux installers are happy to install to a USB stuck and most PCs with happily boot from one.

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I have a working Debian setup install on a large stick, created form the standard install procedure, that I use for diagnostics - adding vbox (or KVM or Xen or.) to that would be the same as adding it to any other Linux setup and you could then add a set of VMs that can be selected to start automatically on boot (rigging the boot process as needed to give you the choice at the appropriate point). For much better performance at a price, get a good mSATA SSD and USB3 enclosure instead of using a bog-standard USB stick.

Summary:Since Virtualbox needs to install drivers, it always needs admin privileges. An installer can be compiled to require this, and many programs that need such privileges are (e.g. Networx, made by SoftPerfect).Virtualbox is not.

If a user has UAC at its default setting (enabled, one notch down from the top), as most people do, then at least in a Vbox upgrade scenario one must remember to run the installer 'as admin.' If this isn't done, then the installation will still look like it worked, but Virtualbox's system drivers will likely not be installed (if you look at the drivers after the reboot - e.g.

Vboxdrv.sys, vboxusb.sys, vboxusbmon.sys, etc - they will not have been updated).Proposal:Virtualbox be made to force elevation upon a normal double click, thereby guaranteeing that this will not be a problem for the forgetful.Note: I have not provided a log since this problem is one that's visible before setup begins to do anything more than show its initial screen. Also, this isn't specific to any particular version. It's been like this for any version for Windows that I can remember up through the current version.

Please provide more information about your setup. Which version of Windows are you using and did you use the official package from the VirtualBox website?Because it's indeed intended that the VirtualBox installer opens the UAC prompt so I wonder why it didn't work for you when it works here. I just tried this locally (Windows 7 host, UAC default setting): I had an old version of 4.3.x installed and upgraded to 4.3.29. Started the installer as normal user. At some time, the UAC prompt is shown asking for confirmation if I want to install 'Oracle VM VirtualBox' on this computer.

So from my perspective, everything works as desired. So what's different with your setup? Er, I didn't get a notification about a response here, explaining the delay. I just happened to come back after someone else mentioned the issue.I was and still am testing in Win10 with the latest versions (currently 5.1.x). It puzzles me somewhat that you see (or at least saw) an automatic UAC prompt in Win7 given that it's the absence of a compile-time switch(.) that is causing UAC to be ignored, and we're using the same installer.

Perhaps this only matters to Win 8 and up, though I would have expected Vista and up. Download crack autocad 2010 64 bit.