Force Reboot :
#echo 1 > /proc/sys/kernel/sysrq
#echo b > /proc/sysrq-trigger
If you want to force shutdown machine try this.
#echo 1 > /proc/sys/kernel/sysrq
#echo o > /proc/sysrq-trigger
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2009-02-16
12 Comments »
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Great! Thanks!
Darko
Comment by Darko — 2009-04-23 @ 08:06
Thanks a lot
This really helped me out. I was remotely connected to a server with some blocked processes, and this was the only way to reboot the server.
Per
Comment by Per — 2009-05-17 @ 08:00
Hi,
great work. Sometimes the only way if reboot or shutdown fails.
Comment by Some Dude — 2009-09-21 @ 15:42
Great!
You very help me!
Comment by girlax — 2010-06-25 @ 00:20
نجاتم داد این دستور ! مرسی !
Comment by saeed — 2010-08-16 @ 01:27
Thanks for that
Comment by tim — 2010-11-09 @ 12:47
Helped me out a lot of times with some kvm hangs.
Comment by André — 2011-02-25 @ 19:55
I dont think the above will work if the file system is read-only (eg corrupt HDD). In this case the command would be:
reboot -n -f
Comment by Brian — 2011-07-06 @ 05:04
Wow, thank you! This worked on Debian 5 64bit! It rebooted my server even when it was hosed.
Comment by Zach — 2011-07-17 @ 03:08
Thanks a lot! This is exactly what i need right now.
Comment by Iyan — 2011-08-05 @ 20:00
@Brian There is no way it will fail because of a file system hangup. The kernel tells the processor to reboot directly. It reboots so hard that it doesn’t even send back the newline once you press .
Comment by 1111 — 2011-12-10 @ 12:44
Thanks a lot !!! ;)
Comment by Regis Vaz — 2013-12-07 @ 05:47