VirtualBox HowTos

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 from RAW to other image formats:

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

Links:

Convert between image formats, e.g. from VHDX to VDI:

VBoxManage clonemedium disk C:\Path1\Disk1.vhdk C:\Path2\Disk2.vdi --format vdi