Hi, i’ve been using UM (Excellent OS) for a few months now which was a clean install onto my Toshiba C660 laptop about 5/6 yrs old, i3, 8gb ram, 500gb hybrid drive, and after a couple of initial problems i managed to get it running fine & today i installed some updates using Software Updater but after a restart i started getting the Grub Boot Menu showing up & 1 of the options is Windows 10 (Loader) which i don’t understand considering the only OS installed is UM & no dual boot. I have tried hiding grub using Pluma etc/default/grub but the 2 listings are already set at: GRUB_HIDDEN_TIMEOUT=0 & _QUIET=TRUE, so i installed Grub-Customizer & unchecked both Show Menu & Look for another Operating System, this seems to have worked for now but can anyone suggest an alternative fix or why it happened.
Your help would be appreciated, cheers.