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=== SL7 Boot: how to add single-user boot entries to initial grub menu === === SL7 Boot: how to add single-user boot entries to initial grub2 menu ===
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 . 1) make a dated copy of /boot/grub2/grub.cfg, i.e. '''cp /boot/grub2/grub.cfg /boot/grub2/grub.cfg.20170117'''
 . 2) make a dated copy of /etc/default/grub, i.e. '''cp /etc/default/grub /etc/default/grub.20170117'''
 . 3) '''vi /etc/default/grub'''		  . 1) make a dated copy of prior /boot/grub2/grub.cfg, i.e. '''cp /boot/grub2/grub.cfg /boot/grub2/grub.cfg.20170117'''
 . 2) make a dated copy of prior /etc/default/grub, i.e. '''cp /etc/default/grub /etc/default/grub.20170117'''
 . 3) '''vi /etc/default/grub''', set these variables:

||<-3> ↓ GRUB_DISABLE_RECOVERY=(true/false) ||
|| ↓ ||<-2> ↓ GRUB_DISABLE_SUBMENU=(true/false) ||
|| true || true || as delivered in stock SL7 distro, no single user entries ||
|| false || true || boot main menu will have single-user entry for every kernel<<BR>>'''as modified 2017/04/09/'''||
|| false || false || boot submenu will have single-user entry for every kernel ||
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|| GRUB_DISABLE_RECOVERY || GRUB_DISABLE_SUBMENU ||
|| true || true || as delivered, no single user entries ||
|| false || true || boot main menu will have single-user entry for every kernel<<BR>>'''as modified 2017/04/09/'''||
|| false || false || boot submenu will have single-user entry for every kernel ||

SL7 Boot: how to add single-user boot entries to initial grub2 menu

  • as root user

  • 1) make a dated copy of prior /boot/grub2/grub.cfg, i.e. cp /boot/grub2/grub.cfg /boot/grub2/grub.cfg.20170117

  • 2) make a dated copy of prior /etc/default/grub, i.e. cp /etc/default/grub /etc/default/grub.20170117

  • 3) vi /etc/default/grub, set these variables:

↓ GRUB_DISABLE_RECOVERY=(true/false)

↓

↓ GRUB_DISABLE_SUBMENU=(true/false)

true

true

as delivered in stock SL7 distro, no single user entries

false

true

boot main menu will have single-user entry for every kernel
as modified 2017/04/09/

false

false

boot submenu will have single-user entry for every kernel

  • 4) run grub2-mkconfig -o /boot/grub2/grub.cfg

  • 5) reboot, new single-user entries will be labelled "recovery"

grub2single (last edited 2017-04-11 02:18:35 by KeithLofstrom)