Magic “SysRq” key, Have you used this key before?. Today i will give you a small tip based on this “SysRq” key.
In short Magic SysRq is a key combination in Linux which allows user to give some low level commands regardless of system’s state. You can read more about Magic SysRq key here.
Certainly when your system freezes you cannot do anything right?
Here is the procedure to use the SysRq key to reboot your linux distro (myself tested in UBUNTU) without any lose of data.
After your system got hanged. Press Alt+SysRq in your keyboard then by holding the those keys press the following keys one by one R S E I U B
For Example:
Press Alt+SysRq then press R for 2-3 seconds then release R (remember you should release only R not Alt+SysRq) and now move to S and press it for 2-3 seconds and release S then move to E and so on…
Please remember you should not release Alt+SysRq throughout the sequence (i.e until you finish releasing ‘B’)
Try to remember the key sequence using the sentence “Reboot Even If System Utterly Broken” .
The key sequence to shutdown the system is Alt+SysRq+R+S+E+I+U+O . Follow the same procedure as above.
Is it clear enough?
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