https://en.wikipedia.org/wiki/Magic_SysRq_key
According to this it's very important. What I can do? Can I rebind this key to something else?
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According to this it's very important. What I can do? Can I rebind this key to something else?
As ravery said, your "Print Screen" key should work.
"SysReq" is often not spelt out on small laptop keyboards, but it is still that key.