ATACTL(8)               OpenBSD System Manager's Manual              ATACTL(8)

NAME
     atactl - a program to manipulate ATA (IDE) devices

SYNOPSIS
     atactl device command [arg [...]]

DESCRIPTION
     atactl allows a user or system administrator to issue commands to and
     otherwise control devices which reside on standard IDE and ATA con-
     trollers.  It is used by specifying a device to manipulate, the command
     to perform, and any arguments the command may require.

DEVICE COMMANDS
     The following commands may be used on IDE and ATA devices.  Note that not
     all devices support all commands.

     identify

     Identify the specified device, displaying the device's vendor, product,
     revision strings, and the device's capabilities.

     idle

     Place the specified device into Idle mode.  This mode may consume less
     power than Active mode.

     standby

     Place the specified device into Standby mode.  This mode will consume
     less power than Idle mode.

     sleep

     Place he specified device into Sleep mode.  This mode will consume less
     power than Standby mode, but requires a device reset to resume operation.
     Typically the wd(4) driver performs this reset automatically, but this
     should still be used with caution.

     setidle standby-timer

     Places the specified device into Idle mode, and sets the Standby timer to
     standby-timer seconds.  A value of 0 will disable the Standby timer.

     setstandby standby-timer

     Places the specified device into Standby mode, and sets the Standby timer
     to standby-timer seconds.  A value of 0 will disable the Standby timer.

     checkpower

     Will print out if the device is in Active, Idle, or Standby power manage-
     ment mode.

BUGS
     The output from the identify command is rather ugly.

SEE ALSO
     ioctl(2),  wd(4)

AUTHOR
     The atactl command was written by Ken Hornstein.  It was based heavily on
     the scsictl(8) command written by Jason R. Thorpe.

HISTORY
     The atactl command first appeared in NetBSD 1.4.

NetBSD                         November 18, 1998                             2
