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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
     operate.  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,
              enclosure 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 11.0-PRERELEASE          May 17, 2001          FreeBSD 11.0-PRERELEASE


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