Following up my earlier post about installing VirtualBox on a new HP laptop that is dual boot Windows 11 and Linux Mint 20.3 with Secure Boot enabled. This machine was running fairly well with both operating systems functioning properly as far as I could determine. (There were, and are, still some error msgs on bootup about the shim files, which I don't understand, but they don't seem to be causing trouble). Trying to install virtualbox, either from the Mint repos or using the virtualbox.org deb file, gave requests to provide a password for MOK to be installed. However, there were also messages that the kernel modules for virtualbox drivers were failing. This is likely (but not certain) to be because I had to use the optional advanced kernels - in fact the most recent offered by Linux Mint, which is in the 5.13 series. Otherwise screen brightness and WiFi and ... were not available for the laptop. I decided to DISABLE SecureBoot. By doing this in UEFI config, I had to enter a passcode that was displayed i.e., an "are you sure" dialog. Virtualbox appliance for Win10 then installed fine, and the dual boot for Win11 still works. I prefer a VM since reboots are inconvenient. Thanks to Dmitriy Korovkin for some ideas, in particular, sudo mokutil --sb-state which allows a quick check if Secure Boot is enabled or disabled. John Nash To unsubscribe send a blank message to linux+unsubscribe [ at ] linux-ottawa [ dot ] org To get help send a blank message to linux+help [ at ] linux-ottawa [ dot ] org To visit the archives: https://lists.linux-ottawa.org