Showing extra options in bootloader

[GaVenga]

He needs to sudo update-grub first.

Before reboot! update-grub tells the system: update the changes made in GRUB Configuration.
(Sie haben sich verdrückt ausgekehrt?)

[GaVenga]

No one can do harm anywhere at any time.
Nobody can cause damage everywhere at the same time.
That was correct - before Computers existed.

? On your machine only one operatingsystem (Manjaro) is installed?
Then the osprober allows himself a joke - or so

[Alif]

thanks. extra options are gone now. Thank you very much.
But,

1. will this edit cause any problem if I (by any chance) install another OS?

2. if I uncomment this line…

@GaVenga

# GRUB_TIMEOUT_STYLE=hidden

will it make the grub invisible (untill I press Shift) as before?

[GaVenga]

EDIT:

if un-comment this line…

Will it make the GRUB = IN-VISIBLE again.
my fault

will this edit cause any problem if I (by any chance) install another OS?

Yes. Solution: use etc/grub.d/40_custom for second OS.

Contents for example (copied from 30_osprober):

(activate look for other OS, sudo update-grub, reboot, uncomment
GRUB_DISABLE_OS_PROBER=true, sudo update-grub, reboot.)

### BEGIN /etc/grub.d/30_os-prober ###
menuentry ‘Windows 10 Boot Manager’ --class windows --class os $menuentry_id_option ‘osprober-efi-xxxxx’ {
savedefault
insmod part_gpt
insmod fat
set root=‘hd0,gpt2’
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-ieee1275=‘ieee1275//disk@0,gpt2’ --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 xxxxx
else
search --no-floppy --fs-uuid --set=root xxxxx
fi
chainloader /efi/Microsoft/Boot/bootmgfw.efi
}
set timeout_style=menu
if [ “${timeout}” = 0 ]; then
set timeout=10
fi
### END /etc/grub.d/30_os-prober ###