VirtualBox HowTos

Contents

• Manually sign VirtualBox kernel modules on Linux to run with SecuteBoot
• Troubleshoot USB pass-through on Linux
• Convert disk images

Manually sign VirtualBox kernel modules on Linux to run with SecuteBoot

Part 1. Generate custom keys

• Install mokutil package

sudo dnf install mokutil

• Create RSA key under new folder

openssl req -new -x509 -newkey rsa:2048 -keyout MOK.priv -outform DER -out MOK.der -nodes -days 36500 -subj "/CN=VirtualBox/"

• This command will ask you to add a password, you need this password after the next reboot

sudo mokutil --import MOK.der

• Reboot your system and a blue screen appear, select Enroll MOK --> Continue --> put the previous password and your system will start

Part 2. Sign kernel modules (must be repeated each time modules are updated)

Run the following command with root privileges from a directory with MOK.priv and MOK.der files from the previous step:

for drv in vboxdrv vboxnetadp vboxnetflt; do
    f=$(modinfo -n $drv)
    unzstd ${f}
    /usr/src/linux-headers-$(uname -r)/scripts/sign-file sha256 ./MOK.priv ./MOK.der ${f%.*}
    zstd -f ${f%.*}
    rm -f ${f%.*}
done

Restart driver

sudo modprobe vboxdrv

Based on: https://stackoverflow.com/a/61248316

Troubleshoot USB pass-through on Linux

Add current user to vboxusers group:

sudo usermod -aG vboxusers $USER

Convert disk images

Use VBoxManage to convert image formats:

VBoxManage convertfromraw --format VDI [filename].img [filename].vdi

Source: https://superuser.com/questions/554862/how-to-convert-img-to-usable-virtualbox-format/555170#555170