No temperature has been showen for SSD as boot device

Hello. I can see all HDD temperature, but the temperature of SSD as boot disk has not been shown.

I can see the SSD data when I checked with smartctl -x /dev/sda as below.

Please let me know how I can get the data.

smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.12.33-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family: Crucial/Micron RealSSD m4/C400
Device Model: M4-CT128M4SSD2
Serial Number: 0000000012040902D4E6
LU WWN Device Id: 5 00a075 10902d4e6
Firmware Version: 000F
User Capacity: 128,035,676,160 bytes [128 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
TRIM Command: Available, deterministic
Device is: In smartctl database 7.3/5528
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 6
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Fri May 1 09:54:46 2026 JST

SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is: Unavailable
APM feature is: Disabled
Rd look-ahead is: Enabled
Write cache is: Enabled
DSN feature is: Unavailable
ATA Security is: Disabled, frozen [SEC2]
Wt Cache Reorder: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x80) Offline data collection activity
was never started.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 595) seconds.

Seems unlikely that you will be able to get the drive temperature. The specs for the M4-CT128M4SSD2 (see e.g. Specifications of M4-CT128M4SSD2 Drive with Firmware 0009 ) indicate that it does not have a temperature sensor.

2 Likes

Hi Redcoat,

Thank you very much for your quick reply. I took a look at an link and I understood that M4 doesn’t support temperature function.

Regards,