Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages


home | help
ATACONTROL(8)		  BSD 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

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

     atacontrol	can cause severe system	crashes	and loss of data if used im-
     properly, 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 at-
	      tached 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 has gone	bad and	no longer re-
	      sponds to	the probe, or devices that has 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 ...

	      Allthough	the ATA	driver allows for creating an ATA RAID on
	      disks on any controller, there are restrictions. It is only pos-
	      sible 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 de-
	      vice is 0	for master and 1 for slave.

	      Show detailed info about the encolsure 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 <>.

BSD				 May 17, 2001				   BSD


Want to link to this manual page? Use this URL:

home | help