Gronk

/gräŋk/

[popularized by Johnny Hart's comic strip "B.C." but the word apparently predates that]

vt. 

1. To clear the state of a wedged device and restart it. More severe than to frob.
2. [TMRC] To cut, sever, smash, or similarly disable.
3. The sound made by many 3.5-inch diskette drives. In particular, the microfloppies on a Commodore Amiga go "grink, gronk".