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CentOS on VirtualBox – Setup to use high resolution

In CentOS 7 guest OS, install dkms:

sudo yum install dkms

Now we need to install kernel headers:

sudo yum install kernel-devel-$(uname -r)

Insert VirtualBox Guest Additional disk, and start install:

sudo ./autorun.sh

Now we can custom virtual screen resolution. (See menu View | Virtual Screen…)

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