1. A memory device comprising: a memory; and a controller in communication with the memory, wherein the controller is operative to: power-up in read-only mode; receive a command from a host device to switch to a write-once, read-many (WORM) mode; in response to the command from the host device, switch from the read-only mode to the WORM mode; and while in the WORM mode: receive a write command from the host device; and determine if the write command should be performed.