Error installing virtualbox downloaded from the virtualbox site

Downloaded virtual box .deb file for Ubuntu installation. Received error about unsandboxed installation.

The solution to the error is to provide the _apt user the rights to write into the folder as shown below:

$ sudo chown -Rv _apt:root /var/cache/apt/archives/partial/ <enter> $ sudo chmod -Rv 700 /var/cache/apt/archives/partial/ <enter>

Phone not detected with adb in the VirtualBox Ubuntu guest

If you create a Linux Virtual Machine using VirtualBox, then you will find that when an Android Phone is connected to the computer via USB port, it will not be detected in the Linux virtual machine.

To overcome this, in VirtualBox select Machine->Settings->USB and check Enable USB Controller and also check Enable USB 2.0 (EHCI) . . . → Read More: Phone not detected with adb in the VirtualBox Ubuntu guest

Install qemu-kvm on Ubuntu Linux

Check if kvm can run on the computer $ sudo kvm-ok <enter>

If it returns lines as follows, then it will work INFO: /dev/kvm exists KVM acceleration can be used

Install qemu-kvm Open a terminal window and enter the commands below. $ sudo apt-get install qemu-kvm libvirt-bin ubuntu-vm-builder bridge-utils virt-viewer virt-manager qemu-system <enter>

$ sudo . . . → Read More: Install qemu-kvm on Ubuntu Linux

VirtualBox does not open .vdi file after it is used with kvm

If you installed VirtualBox and later changed your mind to use the .vdi file with kvm, it will work, but when you go back to VirtualBox, it cannot be used.

This is because, when it was opened with qemu/kvm, the owner and group became root.

To open the file again in VirtualBox, open a terminal . . . → Read More: VirtualBox does not open .vdi file after it is used with kvm

Install Windows 8.1 Preview in VirtualBox

Windows 8.1 Preview cannot be installed and run directly in VirtualBox. It displays the following error message (some text like this):

Error Code: 0x000000C4 Parameters: 0x0000000000000091 0x000000000000000F 0xFFFFF80238F5BA80 0x0000000000000000

After you have downloaded Windows 8.1 Preview from the Microsoft Website, set up a new Virtual Machine in VirtualBox. In my case, I named the machine . . . → Read More: Install Windows 8.1 Preview in VirtualBox

Upgrade virtualbox on Ubuntu

If you have installed VirtualBox on Ubuntu 12.04, you can download the latest package from http://www.virtualbox.org.

You can then install it in a terminal window using dpkg. It will be upgraded, if already installed.

$ sudo apt-get upgrade virtualbox*.deb <enter>

Things to do after Fedora Linux install

So you have now upgraded to the latest Fedora Linux Operating System? Congratulations. You will now need to learn how to use the Gnome 3 desktop environment and also customize your desktop and install additional software. Below is a list of things you can do after you have install Fedora 16 on your computer.

Improve . . . → Read More: Things to do after Fedora Linux install

Install VirtualBox on Fedora 15 or Fedora 16

Download the latest rpm file from http://www.virtualbox.org and install it using: # yum install dkms <enter> # rpm -ivh VirtualBox*.rpm <enter>

If after this you get an error of: (Failed, trying without DKMS) Recompiling VirtualBox kernel modules [FAILED] (Look at /var/log/vbox-install.log to find out what went wrong)

# cat /var/log/vbox-install.log <enter>

This shows following . . . → Read More: Install VirtualBox on Fedora 15 or Fedora 16

Restore Virtual Machines using VirtualBox

Save your VirtualBox virtual machine to a .OVA file. It will be easy to restore back.

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