//usage:#define hdparm_trivial_usage
//usage: "[OPTIONS] [DEVICE]"
//usage:#define hdparm_full_usage "\n\n"
-//usage: "Options:"
-//usage: "\n -a Get/set fs readahead"
+//usage: " -a Get/set fs readahead"
//usage: "\n -A Set drive read-lookahead flag (0/1)"
//usage: "\n -b Get/set bus state (0 == off, 1 == on, 2 == tristate)"
//usage: "\n -B Set Advanced Power Management setting (1-255)"