Why is Grub menu appearing on a single OS machine? I eliminated windows ages ago and now GRUB appears on every other boot. Did I screw something up somehow?
You need to set Grub to not show menu. Open terminal, then issue this:
sudo sed -i 's/^\(GRUB_TIMEOUT_STYLE=\).*/\1hidden/' /etc/default/grub
sudo sed -i 's/^\(GRUB_TIMEOUT=\).*/\10/' /etc/default/grub
sudo update-grub
Usually the window appears when there are problems
eg: power failure, bad shutdown or pressing ctrl-alt-del during boot.
Hi
It means that GRUB is able to detect some windows on your config.
You can check it out with gparted (maybe one old windows disk that you have reused still have boot flag or something)
On a single OS computer, it is important to be able to see and access other boot options.
Imagine, one update will install a new kernel that will fail to boot. Thanks to GRUB, you can boot up the previous config (or the safe mode).