[dm-crypt] Key on usb stick alternative if no usb stick?

Thomas de Graaff thomasdegraaff at planet.nl
Mon Feb 22 14:32:45 CET 2010

I have setup crypttab to use a key file on a usb stick. Is it possible
to make this work in a way that when no usb stick is inserted a manual
entry of a key is asked for, as if "none" had been set in crypttab?

kind regards,

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