Holding down the power button when the systems freezes
Jorge Martínez López
jorgeml at gmail.com
Tue Jan 29 10:01:14 UTC 2013
2013/1/29 Sam Varshavchik <mrsam at courier-mta.com>:
>
> When the machine freezes, try pressing Alt-SysRq-b to force a reboot, if the
> kernel is still alive, somewhere. This will still require a filesystem
> repair, but at least it'll save wear/tear on the hard drives.
>
Even better is to use Alt + SysRq + REISUB (sequentially)
R = unRaw (take control of keyboard back from X),
E = tErminate (send SIGTERM to all processes, allowing them to
terminate gracefully),
I = kIll (send SIGKILL to all processes, forcing them to
terminate immediately),
S = Sync (flush data to disk),
U = Unmount (remount all filesystems read-only),
B= reBoot.
http://en.wikipedia.org/wiki/Magic_SysRq_key
Greetings,
--
Jorge Martínez López <jorgeml at gmail.com> http://www.jorgeml.net
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