How do I make Ubuntu my default boot window?

Using terminal

  1. Edit the configuration file via command: # sudo gedit /etc/default/grub.
  2. To apply the configuration changes you need to run the Update grub command : # sudo update-grub.
  3. Finally set a default boot OS simply using the below command: # sudo grub-set-default NUMBER.

Can Ubuntu boot but not Windows?

If you install Ubuntu in legacy mode, you won’t be able to boot to Windows 10 simply because you installed the two operating systems under two different modes. Make sure that both operating systems are installed in UEFI mode so that you can boot booth of them.

How do I switch my laptop to Ubuntu?

Boot your PC from the Ubuntu CD. After a minute or two, you should see a windows that asks whether you want to try or install Ubuntu. Choose the ‘Try Ubuntu’ option, and in another minute, you should see the basic Ubuntu desktop. You should have access to most of your hardware, including network, sound, and graphics.

How do I switch between dual boot operating systems?

As you boot you may have to hit F9 or F12 to get a “boot menu” which will select which OS to boot. You may have to enter your bios / uefi and select which OS to boot.

Will installing Ubuntu erase Windows?

If you want to remove Windows and replace it with Ubuntu, choose Erase disk and install Ubuntu. All of the files on the disk will be deleted before Ubuntu is put on it, so make sure you have backup copies of anything you wanted to keep.

How do I get to the dual boot menu?

Click the Start button, select the Power button, and then click Restart. After your PC reboots, the boot menu appears, giving you the choice between Windows 10 and Windows 11. Click the one you want to load. If you do nothing, your default OS automatically launches after the number of seconds you set.

How do I get GRUB menu on startup?

You can get GRUB to show the menu even if the default GRUB_HIDDEN_TIMEOUT=0 setting is in effect:

  1. If your computer uses BIOS for booting, then hold down the Shift key while GRUB is loading to get the boot menu.
  2. If your computer uses UEFI for booting, press Esc several times while GRUB is loading to get the boot menu.