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When I use smartctl -s off /dev/sda with admin privilege, the SMART support is said to be disable:

C:\Program Files\smartmontools\bin>smartctl -s off /dev/sda
smartctl 6.5 2016-05-07 r4318 [i686-w64-mingw32-win8.1] (sf-6.5-1)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF ENABLE/DISABLE COMMANDS SECTION ===
SMART Disabled. Use option -s with argument 'on' to enable it.

It is confirmed by using smartctl -a /dev/sda/:

C:\Program Files\smartmontools\bin>smartctl -a /dev/sda
smartctl 6.5 2016-05-07 r4318 [i686-w64-mingw32-win8.1] (sf-6.5-1)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Hitachi/HGST Travelstar Z5K320
Device Model:     Hitachi HTS543232A7A384
Serial Number:    E2034243EEG7TP
LU WWN Device Id: 5 000cca 690e24d54
Firmware Version: ES2OA60W
User Capacity:    320,072,933,376 bytes [320 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    5400 rpm
Form Factor:      2.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 6
SATA Version is:  SATA 2.6, 3.0 Gb/s
Local Time is:    Tue Jan 17 23:10:55 2017 SEAST
SMART support is: Available - device has SMART capability.
SMART support is: Disabled

SMART Disabled. Use option -s with argument 'on' to enable it.

But when I restart my computer, the SMART check comes back again. Why is that?

My BIOS version is 1.31, and there is no SMART option in it (only D2D recovery).

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  • What do you mean by "when I restart it"? What is the "it" you are talking about? Commented Jan 17, 2017 at 18:19
  • I mean the computer
    – Ooker
    Commented Jan 18, 2017 at 2:35
  • What is your outer problem? Why is it a problem if a reboot enables SMART support? Commented Jan 18, 2017 at 3:06
  • Well, my disc has some bad sector and the SMART check keeps interrupting the booting. I would like to disable it.
    – Ooker
    Commented Jan 18, 2017 at 4:14
  • Well then you have no choice but to do it in the BIOS and if your BIOS provides no way to do it, you're out of luck. No OS software can run during or before booting. Commented Jan 18, 2017 at 4:22

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