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ATACONTROL(8)		FreeBSD	System Manager's Manual		 ATACONTROL(8)

     atacontrol	-- ATA device driver control program

     atacontrol	<command> args

     atacontrol	attach channel
     atacontrol	detach channel
     atacontrol	reinit channel
     atacontrol	create type [interleave] disk0 ... diskN
     atacontrol	delete raid
     atacontrol	rebuild	raid
     atacontrol	status raid
     atacontrol	mode channel [mastermode slavemode]
     atacontrol	info channel
     atacontrol	cap channel device
     atacontrol	enclosure channel device
     atacontrol	list

     The atacontrol utility is a control program that provides the user	access
     and control to the	FreeBSD	ata(4) subsystem.

     The atacontrol utility can	cause severe system crashes and	loss of	data
     if	used improperly.  Please exercise caution when using this command!

     The channel argument is the number	of the ATA channel on which to oper-
     ate.  The following commands are supported:

     attach   Attach an	ATA channel.  Devices on the channel are probed	and
	      attached as is done on boot.

     detach   Detach an	ATA channel.  Devices on the channel are removed from
	      the kernel, and all outstanding transfers	etc. are returned back
	      to the system marked as failed.

     reinit   Reinitialize an ATA channel.  Both devices on the	channel	are
	      reset and	initialized to the parameters the ATA driver has
	      stored internally.  Devices that have gone bad and no longer
	      respond to the probe, or devices that have physically been
	      removed, are removed from	the kernel.  Likewise are devices that
	      show up during a reset, probed and attached.

     create   Create a type ATA	RAID. The Type can be RAID0 (stripe), RAID1
	      (mirror),	RAID0+1	or SPAN	(JBOD).	In case	the RAID has a RAID0
	      component	the interleave must be specified in number of sectors.
	      The RAID will be created of the individual disks named disk0 ...

	      Although the ATA driver allows for creating an ATA RAID on disks
	      with any controller, there are restrictions. It is only possible
	      to boot on an array if its either	located	on a "real" ATA	RAID
	      controller like the Promise or Highpoint controllers, or if the
	      RAID declared is of RAID1	or SPAN	type, in case of a SPAN	the
	      partition	to boot	must reside on the first disk in the SPAN.

     delete   Deletes a	RAID array on a	RAID capable ATA controller.

     rebuild  Rebuild a	RAID1 array on a RAID capable ATA controller.

     status   Get the status of	an ATA RAID.

     mode     Without the two mode arguments the current transfer modes	of
	      both devices are printed.	 If the	mode arguments are given, the
	      ATA driver is asked to change the	transfer modes to those	given.
	      The ATA driver will reject modes that is not supported by	the
	      hardware.	 Modes are given like ``PIO3'',	``udma2'',
	      ``udma100'', case	does not matter.  If one of the	devices	mode
	      should not be changed, use a nonexisting mode as argument	(i.e.
	      ``XXX''),	and the	mode will remain unchanged.

     info     Show info	about the attached devices on the channel.  The	device
	      name and manufacture/version strings are shown.

     cap      Show detailed info about the device on channel device where
	      device is	0 for master and 1 for slave.

	      Show detailed info about the enclosure on	channel	device where
	      device is	0 for master and 1 for slave.  Fan RPM speed, enclo-
	      sure temperature,	5V and 12V levels are shown.

     list     Show info	about all attached devices on all active controllers.


     The atacontrol utility first appeared in FreeBSD 4.6.

     The atacontrol utility was	written	by Soren Schmidt <>.

     This manual page was written by Soren Schmidt <>.

FreeBSD	11.1			 May 17, 2001			  FreeBSD 11.1


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