Re: Forcing an immediate reboot

From: Anton Altaparmakov
Date: Sat Oct 15 2005 - 02:48:38 EST

On Fri, 14 Oct 2005, Lee Revell wrote:
> On Fri, 2005-10-14 at 18:46 -0700, Marc Perkel wrote:
> > Is there any way to force an immediate reboot as if to push the reset
> > button in software? Got a remote server that i need to reboot and
> > shutdown isn't working.
> If it has Oopsed, and the "reboot" command does not work, then all bets
> are off - kernel memory has probably been corrupted.
> Get one of those powerstrips that you can telnet into and power cycle
> things remotely.

If it has sysrq compiled in as root just do:

echo s > /proc/sysrq-trigger
echo u > /proc/sysre-trigger
echo s > /proc/sysrq-trigger
echo b > /proc/sysrq-trigger

This will "sync", "umount/remount read-only", "sync", "immediate hardware
reboot". Should always work...

Best regards,

Anton Altaparmakov <aia21 at> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer / IRC: #ntfs on
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