Error on boot: uefi db list

[wizardfromoz]

I read that I'm supposed to press either esc or shift on boot but nothing is happening

I have recently read that many Mac users have success with either of Tab key, or F8.

You are barking up the wrong tree trying to find a correct grub.cfg to edit.

Your actual grub.cfg file will be the one in /boot/grub, not in the efi paths at all.

It will start by saying

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub

If you have the knowledge to safely edit grub.cfg, the changes will only last until the next kernel upgrade, typically, and then wiped.

The file you want to edit is /etc/default/grub

Mine, on Deepin, looks a little like this

[email protected]:~$ cat /etc/default/grub
# Written by com.deepin.daemon.Grub2
DEEPIN_GFXMODE_DETECT=2
GRUB_CMDLINE_LINUX=""
GRUB_CMDLINE_LINUX_DEFAULT="nosplash noquiet"
GRUB_DEFAULT=saved
GRUB_DISTRIBUTOR="`/usr/bin/lsb_release -d -s 2>/dev/null || echo Deepin`"
GRUB_GFXMODE=1920x1080,1680x1050,1600x1024,1400x1050,1600x900,1280x1024,1440x900,1400x900,1280x960,1440x810,1368x768,1360x768,1280x800,1152x864,1280x720,1024x768,auto
GRUB_SAVEDEFAULT=true
GRUB_THEME=/boot/grub/themes/deepin-fallback/theme.txt
GRUB_TIMEOUT=10

Yours will be a little different, perhaps without the splash, quiet and saved references.

You can edit /etc/default/grub from a USB stick and save it, but then in order for the effects to take place, you still have to run

sudo update-grub

and then reboot.

You can't do that from the stick without using chroot.

Can you give us the output for /etc/default/grub via the USB stick?

Cheers

Wizard

 

[BoredPanda]

Sorry for the late reply. I actually reinstalled my os, I'm not even running deepin anymore.
Thank you all for your help! I really appreciated <3

 

[atanere]

Sorry for the late reply. I actually reinstalled my os, I'm not even running deepin anymore.
Thank you all for your help! I really appreciated <3

And sometimes that is the very best solution! If you have time, let us know which distro you installed, and if it worked on your Mac without the errors you were getting.It might help other Mac users to hear your experiences.

Cheers