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I'm trying to better understand dual boot but I have a problem.

I have Windows 10 and Ubuntu 20.04.1. installed on the same PC (dual boot)

I want to set Ubuntu as default.

The boot default seems to be Windows but the problem is that I've tried to change the grub default to GRUB_DEFAULT="Ubuntu" from my Grub customizer but it doesn't work.

Any idea?

julien HLH
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  • This might help: https://askubuntu.com/questions/599208/how-to-list-grubs-menuentries-in-command-line There is also the grub-set-default command to help set the default you want it to boot to. – Terrance Jan 26 '21 at 19:15
  • If you use description, it must be the exact line that is in the grub menu. Copy & paste that. Normally ubuntu is first entry in grub and you just leave it at GRUB_DEFAULT=0 in /etc/default/grub. If you are looking at ubuntu entry in UEFI boot menu, check this sudo efibootmgr -v and you can change boot order in UEFI with efibootmgr for many systems, HP (maybe some others) only allow changes from within UEFI. See man efibootmgr & http://askubuntu.com/questions/485261/change-boot-order-using-efibootmgr – oldfred Jan 26 '21 at 19:21

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