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---
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title: My virtual windows machine from VirtualBox on Big Sur will not start
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aliases: /posts/2020-11-22-virtual-machine-on-big-sur-not-starting
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summary: >
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A quick fix if your virtual machine will not start. As long, as you got the
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same configuration as me
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categories: [computerstuff]
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tags: [macos, virtualbox]
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date: 2020-11-22T18:02:45+01:00
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---
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Okay, a quick one. I've updated my macbook now to Big Sur today. A lot of files
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have been copied and moved and written and so on -- I think that update was
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something around 12 GB of files to download...
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So my virtual windows machine won't start. With a quick Google search I found some
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hints, that the kernel drivers will not load or something like that. A few posts
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below I read something about the System Protection of macOS and read on a bit.
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Now to make things short: I restarted the macbook, went straight into recovery
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mode and fired up the terminal.
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The command `csrutil status` told me, that my system was in an undefined state.
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I'm not sure what I changed here on the last major macOS version but it printed
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a few changes and something that I did not read completely. I just enabled the
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protection system as suggested on the forums before and rebootet the system again.
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To enable Apples protection system, type this command:
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```console
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$ csrutil enable
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```
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After that, type `reboot` and hit enter.
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This fixed it for me and I am now able to run my virtual windows machine. But: I
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still cannot open my NFS shares on my Raspberry Pi yet.
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