Install CentOS on Virtualbox

Install Virtualbox guest additions

log in as root and type in terminal

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yum install gcc -y

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yum install kernel sources -y


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yum install kernel-devel -y

restart the system

now go to the VBox Addition directory in your /media directory and type:

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sh VBoxLinuxAdditions.run

restart the system again

Edit xorg.conf

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024" "1024x768" "800x600"
EndSubSection
EndSection