Patent ID: 8199586

Claim:
A method for operating non-volatile storage, comprising: erasing non-volatile storage elements; performing programming for said non-volatile storage elements; and selectively performing re-erasing of a first subset of non-volatile storage elements that were supposed to remain erased without intentionally erasing programmed data by performing one or more erase operations for the first subset of non-volatile storage elements that were supposed to remain erased comprising boosting a first set of channel regions to a first voltage range for the first subset of non-volatile elements that were supposed to remain erased without boosting a second set of channel regions to said first voltage range for a second subset of non-volatile elements that were supposed to be programmed, said first set of channel regions and said second set of channel regions are part of a common substrate region, applying a boosting enabling voltage to said first subset of non-volatile storage elements, applying a boosting disabling voltage to said second subset of non-volatile storage elements, charging said common substrate region, applying a voltage signal to an unselected common control line for coupling said first subset and said second subset of non-volatile storage elements to said unselected common control line, applying a boosting signal beyond said voltage signal to said unselected common control line to boost said first set of channel regions, and applying a common enabling voltage to said first subset of non-volatile storage elements and said second subset of non-volatile storage elements in order to lower threshold voltages of said first subset of non-volatile storage elements without intentionally lowering threshold voltages of said second subset of non-volatile storage elements.