(on Wikipedia)
http://lxr.linux.no/linux/Documentation/sysrq.txt
Makes certain low-level commands available "no matter what".
aka System request
How to use:
- Hold
altdown - Tap
SysRq(Print Screen) - Tap
SysRq Tap the hotkey you wish
- e.g.
h
- e.g.
Release
alt
Rebooting, no matter what ∞
reisub
| unRaw | (take control of keyboard back from X), |
| tErminate | (send SIGTERM to all processes, allowing them to terminate gracefully), |
| kIll | (send SIGKILL to all processes, forcing them to terminate immediately), |
| Sync | (flush data to disk), |
| Unmount | (remount all filesystems read-only), |
| reBoot. |
I've had my system hang on the LILO screen when rebooting, forcing a hard reboot.
