Re: grub menu

[Stephen Morris <samorris@xxxxxxxxxxxxxxx>]

On 13/11/18 3:26 am, Tom H wrote:
> On Mon, Nov 12, 2018 at 3:05 PM Tom Horsley <horsley1953@xxxxxxxxx> wrote:
> > If I edit the grub.cfg file and replace this absurd
> > chunk of gibberish:
> >
> > if [ x$feature_timeout_style = xy ] ; then
> >    if [ "${menu_show_once}" ]; then
> >      unset menu_show_once
> >      save_env menu_show_once
> >      set timeout_style=menu
> >      set timeout=60
> >    elif [ "${menu_auto_hide}" -a "${last_boot_ok}" = "1" ]; then
> >      set orig_timeout_style=${timeout_style}
> >      set orig_timeout=${timeout}
> >      if [ "${fastboot}" = "1" ]; then
> >        # timeout_style=menu + timeout=0 avoids the countdown code keypress check
> >        set timeout_style=menu
> >        set timeout=0
> >      else
> >        set timeout_style=hidden
> >        set timeout=1
> >      fi
> >    fi
> > fi
> >
> > with just
> >
> > set timeout=5
> >
> > will I get my grub menu back so I can do things
> > like choose previous kernels?
> >
> > Or should I just delete the entire chunk of code
> > between the 01_menu_auto_hide comments?
> >
> > And why isn't there a way to disable the whole
> > auto hide nonsense? The only thing it appears to be
> > checking is a serial console, no define you can provide
> > to just say "Dammit! Don't hide my menu!"
>
> I ignore the boilerplate and I run "chmod -x /etc/grub.d/*", copy one
> of the two below into "/etc/grub.d/*", "chmod +x" it, and run
> grub-mkconfig:
>
>
> localhost ~ # cat 90-grub-console
> #!/bin/sh
>
> cat <<EOF
> # menu
> set default=0
> set timeout=2
>
> # kernel
> insmod gzio
>
> # disk/partition
> insmod part_gpt
>
> # filesystem
> insmod ext2
>
> # /boot
> search --no-floppy --fs-uuid --set=root 2ffc4e71-31ca-4816-b969-2862937ee395
>
> # video
> terminal_input console
> terminal_output console
>
> menuentry 'multi' {
> linux /boot/kernel root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro
> initrd /boot/ramfs
> }
>
> menuentry 'single' {
> linux /boot/kernel root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro single
> initrd /boot/ramfs
> }
>
> menuentry 'emergency' {
> linux /boot/kernel root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro emergency
> initrd /boot/ramfs
> }
>
> menuentry 'multi (old)' {
> linux /boot/kernel-old root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro
> initrd /boot/ramfs-old
> }
>
> menuentry 'single (old)' {
> linux /boot/kernel-old root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro single
> initrd /boot/ramfs-old
> }
>
> menuentry 'emergency (old)' {
> linux /boot/kernel-old root=UUID=2653b879-3c02-4d05-a678-315259e0e11f
> ro emergency
> initrd /boot/ramfs-old
> }
> EOF
>
>
> localhost ~ # cat 90-grub-gfxterm
> #!/bin/sh
> exec tail -n +3 $0
> # This file provides an easy way to add custom menu entries.
> # Type the menu entries you want to add after this comment.
> # Be careful not to change the 'exec tail' line above.
> # menu
> set default=0
> set timeout=2
>
> # kernel
> insmod gzio
>
> # disk/partition
> insmod part_gpt
>
> # filesystem
> insmod ext2
>
> # /boot
> search --no-floppy --fs-uuid --set=root 2ffc4e71-31ca-4816-b969-2862937ee395
>
> # video
> insmod all_video
> insmod gettext
> insmod gfxterm
> loadfont $prefix/unicode.pf2
> set gfxmode=auto
> set lang=en_US
> set locale_dir=$prefix/locale
> terminal_input gfxterm
> terminal_output gfxterm
>
> menuentry 'multi' {
> linux /boot/kernel root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro
> initrd /boot/ramfs
> }
>
> menuentry 'single' {
> linux /boot/kernel root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro single
> initrd /boot/ramfs
> }
>
> menuentry 'emergency' {
> linux /boot/kernel root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro emergency
> initrd /boot/ramfs
> }
>
> menuentry 'multi (old)' {
> linux /boot/kernel-old root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro
> initrd /boot/ramfs-old
> }
>
> menuentry 'single (old)' {
> linux /boot/kernel-old root=UUID=2653b879-3c02-4d05-a678-315259e0e11f ro single
> initrd /boot/ramfs-old
> }
>
> menuentry 'emergency (old)' {
> linux /boot/kernel-old root=UUID=2653b879-3c02-4d05-a678-315259e0e11f
> ro emergency
> initrd /boot/ramfs-old
> }

Just a comment, I always use grub2-mkconfig/grub2-install as I hate the 
menu display produced by grubby, but ignoring that, I would be 
questioning where that timeout code in grub.cfg came from, as I don't 
have that in either of my grub.cfg files and I have never had any 
auto-hide functionality in the grub menus from any version of Fedora I 
have used.


regards,

Steve


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