topic Re: can't get boot menu in Firewall and Security Management

can't get boot menu

flachance — Thu, 18 Jul 2024 12:41:05 GMT

Hi,

I need to get in maintenance mode to use lvm_manager.

It's a management server in Azure R81.20 JHF take 41

Upon reboot I should see the boot menu and be able to select maintenance mode but I never see a boot menu.

First thing I see is

I tried with a reboot and with a shutdown/powerup.

Is there another way or am I missing something?

thanks

Re: can't get boot menu

flachance — Thu, 18 Jul 2024 12:44:52 GMT

I just went into Azure boot diagnostics and I see the boot menu prompt. So it looks like the time it takes for the serial console to connect I'm already passed the boot menu option.

Re: can't get boot menu

PhoneBoy — Thu, 18 Jul 2024 16:31:49 GMT

@Gil_Sudai any idea?

Re: can't get boot menu

Lesley — Thu, 18 Jul 2024 18:16:24 GMT

https://support.checkpoint.com/results/sk/sk170732

Re: can't get boot menu

Bob_Zimmerman — Thu, 18 Jul 2024 20:59:37 GMT

You could also edit the /boot/grub/grub.conf file to extend the timer or change the default boot option.

The grub.conf from that SK article does this by removing all the boot options except maintenance mode. It's easy to just change the default boot option directly, though:

[Expert@DallasSA]# egrep "^(default|title)" /boot/grub/grub.conf default=5 title Revert from other image title Reset to factory defaults - Gaia R81.10 title Start in 64bit no-debug mode title Start in maintenance mode 64bit title Start in 64bit online debug mode title Start in 64bit normal mode title HW Diagnostics

The value of 'default' starts from 0 and selects which option to select. Change that line to 'default=3' and it will boot to maintenance mode every time. Then when you're done in maintenance mode, you can change it back to 5 and it will boot in 64-bit normal mode.

Re: can't get boot menu

flachance — Fri, 19 Jul 2024 11:56:14 GMT

Yes that's what I used to do before. But in R81.20 it's now grub2/grub.cfg and it looks different than the grub.conf file in previous version so I'm a bit wary of touching that for now.