3 .\" Copyright (c) 2012 Microsoft Corp.
4 .\" All rights reserved.
6 .\" Redistribution and use in source and binary forms, with or without
7 .\" modification, are permitted provided that the following conditions
9 .\" 1. Redistributions of source code must retain the above copyright
10 .\" notice, this list of conditions and the following disclaimer.
11 .\" 2. Redistributions in binary form must reproduce the above copyright
12 .\" notice, this list of conditions and the following disclaimer in the
13 .\" documentation and/or other materials provided with the distribution.
15 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 .Dd September 10, 2013
31 .Nm hv_ata_pci_disengage
32 .Nd Hyper-V ATA PCI Disengage driver
34 To compile this driver into the kernel, place the following lines in
35 the system kernel configuration file:
36 .Bd -ragged -offset indent
42 driver prevents the native
45 loading in the presence of Hyper-V.
47 guests running on Hyper-V can take advantage of the Hyper-V Storage
50 for using their IDE devices.
52 driver serves IDE devices as well, there is a chance that the ATA driver may
53 interfere with the operations of
58 conflicts between the ATA driver and
60 by disabling the ATA driver
65 A side effect of disabling the ATA driver is that CDROM may become
69 If CDROM access is a must then users may use
70 "set hw.ata.disk_enable=1" at boot time to prevent the ATA driver from being
82 The driver was developed through a joint effort between Citrix Incorporated,
83 Microsoft Corporation, and Network Appliance Incorporated.
90 .An Microsoft BSD Integration Services Team Aq bsdic@microsoft.com .