Run not default grub2 entry by remote way

[Marcin Przysowa]

Hello help-grub team,

 I use Grub2 and have two entry:

- default [Ubuntu with ssh access only]

- second [FreeDOS with upgrade BIOS tools and reboot at the end]

I search way to run ONE times PC from 'second' grub entry and on all next reboots run from 'default' grub entry.

My situation is like this:

I must upgrade BIOS on 30x PCs on different localization, I can go car by 20days or do it remote = I have ssh access to this machine only. This all 31x Foxconn Nettop are the same model, I test upgrade BIOS by run a FreeDOS by Grub2 = works fine! :). I search way how run second grub entry one time, and next runs do by defaults without success.

I know that Grub2 works with scripts... but I'm not find a solution.

I've hope It's possible to do it.

Thanks for any answers!

Best Regards

Marcin Przysowa