How to customize Grub Bootloader?

colorpurple21859 · 10-26-2021, 07:08 AM

Post the output of

Code:

 sudo mount /dev/nvme0n1p1 /boot/efi
cat /boot/efi/EFI/mx/grub.cfg
cat /sys/firmware/efi

Muxpux · 10-26-2021, 10:09 AM

Quote:

Originally Posted by colorpurple21859

Post the output of

Code:

 sudo mount /dev/nvme0n1p1 /boot/efi
cat /boot/efi/EFI/mx/grub.cfg
cat /sys/firmware/efi

cat: /boot/efi/EFI/mx/grub.cfg: No such file or directory
cat: /sys/firmware/efi: No such file or directory

colorpurple21859 · 10-26-2021, 04:38 PM

You installed mx in legacy mode, you won’t be able to boot windows from grub because windows is installed in uefi mode. I was hoping you had an option to boot from file in the bios boot settings, or the uefi boot menu would pick up the the mx entry created on the efi partition. The only options now are to do a reinstall of mx in uefi mode or boot the mx live iso in uefi mode and create an entry in the bios with efibootmgr. To boot the iso in uefi mode go in the bios and disable fast boot, secure boot, and legacy mode.

Muxpux · 10-26-2021, 05:29 PM

Quote:

Originally Posted by colorpurple21859

You installed mx in legacy mode, you won’t be able to boot windows from grub because windows is installed in uefi mode. I was hoping you had an option to boot from file in the bios boot settings, or the uefi boot menu would pick up the the mx entry created on the efi partition. The only options now are to do a reinstall of mx in uefi mode or boot the mx live iso in uefi mode and create an entry in the bios with efibootmgr. To boot the iso in uefi mode go in the bios and disable fast boot, secure boot, and legacy mode.

First, let me thank you for keeping up with this. I thought I had installed in UEFI mode, simply because I booted in UEFI mode and selected the Linux DVD via mouse click. Fast and secure are disabled, trouble is that once I disable CSM support, only Windows boot manager shows as an option, every thing else is gone, also on F12. That's the only thing I have to figure out then.
Reinstalling MX Linux is no problem, it started hanging up when I connected an external drive via USB, and everything became molasses. Will reinstall.

colorpurple21859 · 10-26-2021, 08:00 PM

The “cat /sys/firmware/efi” will give a “is a directory” message when linux is boot in efi mode.

Sentinelslack · 03-30-2022, 02:30 PM

Quote:

Originally Posted by colorpurple21859

there was a typo

Code:

sudo nano /etc/grub.d/40_custom

enter this after what is already there

Code:

menuentry 'Windows 10'{
set root=(hd0,2)
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
}

exit out and save

Code:

sudo update-grub

can anyone group slackware with windows?

colorpurple21859 · 03-31-2022, 11:51 AM

Quote:

can anyone group slackware with windows?

I'm not sure what you're asking. It would be best to start a new thread with details of the problem and what you have tried.