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Usage
=====
Do
$ man 8 kexec
for full understanding of the underlying kexec command.
Gentoo offers a wrapper to the bare kexec command through
/etc/init.d/kexec.
Configuration
-------------
Configuration is done in /etc/conf.d/kexec, which is self-documented.
Usage
-----
In Gentoo, kexec is invoked, i.e., the new kernel will be booted when
rebooting, by reboot (8) command or by pressing Ctrl+Alt+Del.
If you want to use kexec once, just run
$ /etc/init.d/kexec start
It'll reserve kexec call at reboot. Later on, you can reboot anytime,
letting kexec starts another (or the same) kernel. When all is done in
the runlevel 6 - killing processes, unmounting volumes, etc - kexec
starts the new kernel instead of doing the normal hardware reboot.
If you want kexec to be run every time you reboot, add it to a runlevel:
$ rc-update add kexec <runlevel>
If you want to reboot in the normal way this time, do:
$ touch /nokexec
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