A bootable disk has been created incorrectly or is not bootable Let’s consider the most popular reasons why you can get the No bootable medium found in VirtualBox error and review the algorithms of actions that can help you resolve this issue. Reasons Why You Can Get the No Bootable Medium Found in VirtualBox Error The No bootable medium found in VirtualBox error is common when creating a new VM.

In today’s blog post, we will review all possible cases when this error can occur, as well as methods for resolving this issue. Sometimes when you are creating a new VM or when you are trying to start an existing VM, your VM cannot boot and you get the error: No bootable medium found! System halted. Thanks for the tip Mike This works in all versions of MacOS and Mac OS X with Mission Control, from Lion, Mavericks, Yosemite, El Capitan, Sierra, Mojave, Big Sur, etc.By Michael Bose No Bootable Medium Found in VirtualBox: The Best Solution is Here!

Whichever method you choose to perform the restart, this can be a great troubleshooting tip if you’re running into peculiarities with graphical artifacts, irregular Desktop Spaces assignments, and other generally buggy behavior within Mission Control. The Dock and all subprocesses will restart themselves automatically, including Mission Control. The command line method is much faster if you’re comfortable with Terminal.app, launch Terminal from /Applications/Utilities/ and type the following command:

Select the ‘Dock’ process and then click on the (X) “Quit Process” button, confirming in the dialogue box by selecting ‘Force Quit’Īgain, the Dock and Mission Control will automatically restart themselves.

In the upper right corner of Activity Monitor, find the search box and type “Dock”.

Hit Command+Space to bring up Spotlight, and type in “Activity Monitor” and hit return to launch the app.

Using the task management tool Activity Monitor is the other option for those who prefer staying within the GU and avoiding the command line: How to Restart Mission Control on Mac via Activity Monitor

Forcibly restarting Mission Control is done by killing the Dock, where Mission Control is a child process of, and this is also why when you want to change the Mission Control background image you kill the Dock.

Centos mac os x lion iso