US 11,947,816 B1
Solid state drives with improved format handling
Saswati Das, Milpitas, CA (US)
Assigned to Kioxia Corporation, Tokyo (JP)
Filed by Kioxia Corporation, Tokyo (JP)
Filed on Sep. 19, 2022, as Appl. No. 17/948,013.
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0632 (2013.01) [G06F 3/0604 (2013.01); G06F 3/065 (2013.01); G06F 3/0679 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method performed by a controller of a solid-state drive (SSD), comprising:
receiving a command from a host, the command identifying a namespace in a non-volatile semiconductor memory device of the SSD to be formatted;
identifying a plurality of regions in the non-volatile semiconductor memory device corresponding to the namespace;
unmapping a dummy region in a volatile semiconductor memory device of the SSD using invalid addresses; and
copying the invalidated dummy region to each region of the plurality of regions of the namespace.