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Linux Foundation: 20 Years of Linux

Just a little Windows remote admin nugget …

If you have File/Printer sharing enabled in a windows PC, you can shut it down or restart it from a Linux PC on the network using the following:

net rpc shutdown -I IPADDRESS -U USERNAME%PASSWORD

You’ll need the samba-common package for the net command, and the user being supplied will need admin privileges.

If you are getting the VirtualBox can’t operate in VMX root mode error dialog shown below …

… it is because you have the kvm and kvm_intel kernel modules enabled. You will need to unload them using the following commands:

sudo modprobe -r kvm_intel
sudo modprobe -r kvm


You should now be able to start your Virtual Machine.

If you want a permanent solution, you need to disable full virtualisation for qemu/kvm using the Boot-up manager. You can do so by following these steps.

1. Install the Boot-up Manager:

You can do this via the Software Center, where you can find it in the System Tools section:

Alternatively, you can install it by typing the following in a console:

sudo apt-get install bum

2. Start the Boot-up manager from the System > Administration menu.

3. Untick Full virtualization on i386 and amd64 hardware and click Apply.

Note: VirtualBox will still run under full virtualisation provided your system supports it.

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