Set easy switching between Hyper-V and Virtualbox at startup. Run from powershell once, if you run multiple times, go to msconfig and delete excess entry.

HyperV-switch-VirtualBox.ps1

param([switch]$Elevated)
function Check-Admin {
  $currentUser = New-Object Security.Principal.WindowsPrincipal $([Security.Principal.WindowsIdentity]::GetCurrent())
  $currentUser.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator)
}
if ((Check-Admin) -eq $false)  {
  if ($elevated)
  {
  # could not elevate, quit
  }
  else {
    Start-Process powershell.exe -Verb RunAs -ArgumentList ('-noprofile -noexit -file "{0}" -elevated' -f ($myinvocation.MyCommand.Definition))
  }
exit
}
bcdedit /set "{current}" description "Windows 10 Hyper-V"
$str = bcdedit /copy "{current}" /d "Windows 10 VirtualBox"
$start = $str.indexOf("{")
$length = $str.indexOf("}")+1 - $start 
$id = $str.substring($start, $length)
bcdedit /set $id hypervisorlaunchtype off
bcdedit /timeout 5
bcdedit