Lines Matching +full:add +full:- +full:disk

2 Hard disk shock protection
7 Last modified: 2008-10-03
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21 ATA/ATAPI-7 specifies the IDLE IMMEDIATE command with unload feature.
23 unload disk heads. This feature is being used in modern laptops in
29 implement a generic disk head parking interface in the Linux kernel.
31 system in order to get disk shock protection working (see
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42 -EOPNOTSUPP if the device does not support the unload feature.
46 no further disk head park request has been issued in the meantime,
49 -EOVERFLOW, but heads will be parked anyway and the timeout will be
55 immediately by specifying a timeout of 0. Values below -2 are rejected
56 with -EINVAL (see below for the special meaning of -1 and -2). If the
77 unload operation to complete is vendor specific. The hint in ATA-7
79 been dropped in ATA-8.
92 which means that a user-issued head parking request to one device may
98 fine from the occasional buffer under-run incurred by a head park
100 than its libata counterpart (i.e. your disk is called /dev/hda
109 version of the ATA standard than ATA-7, but do support the unload
116 the special value -1 to the unload_heads attribute::
118 	# echo -1 > /sys/block/sda/device/unload_heads
120 will enable the feature for /dev/sda, and giving -2 instead of -1 will
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135 for use. Please feel free to add projects that have been the victims
138 - https://www.thinkwiki.org/wiki/HDAPS
140   See this page for information about Linux support of the hard disk
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147 This implementation of disk head parking has been inspired by a patch