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IDE warm-plug HOWTO
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===================
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To warm-plug devices on a port 'idex'::
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# echo -n "1" > /sys/class/ide_port/idex/delete_devices
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unplug old device(s) and plug new device(s)::
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# echo -n "1" > /sys/class/ide_port/idex/scan
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done
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NOTE: please make sure that partitions are unmounted and that there are
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no other active references to devices before doing "delete_devices" step,
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also do not attempt "scan" step on devices currently in use -- otherwise
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results may be unpredictable and lead to data loss if you're unlucky
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