On 06/01/2018 02:27 AM, Gerd Hoffmann wrote: > Hi, > >> Side note, android's 'reboot' cmd can take an argument, like 'reboot >> fastboot' or 'reboot recovery'.. that might be one of the few features >> from android worth copying ;-) > > I'm still missing something simliar to "lilo -R <cmdline>" in the world > of modern boot loaders. This used to set the lilo command line for the > next boot. lilo command line is boot entry name plus additional kernel > parameters. So you say ... > > "lilo -R default single && reboot" > > ... for a single user boot. Or ... > > "lilo -R testkernel && reboot" > > ... to boot a different kernel once. > > Seems at least for the second use case some out-of-tree grub2 patches > are floating around, adding a --once switch to grub-set-default. Some > linux systems have it, some don't . grub2-reboot 1 will set it to boot entry 1 (it starts counting from 0) the next time you boot only. It doesn't help passing args, but it does let you boot a particular kernel entry. kevin
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