FreeBSD:
euler@rpi4b:~ % sudo camcontrol devlist Password: <YSSDJQB- 2TB 1.02> at scbus0 target 0 lun 0 (da0,pass0) euler@rpi4b:~ % ls /dev/da0 da0% da0p1% euler@rpi4b:~ % ls /dev/da0 /dev/da0
euler@rpi4b:~ % sudo smartctl -a /dev/da0 smartctl 7.4 2023-08-01 r5530 [FreeBSD 14.1-RELEASE arm64] (local build) Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org/dev/da0: Unknown USB bridge [0x0bda:0x9201 (0xf200)] Please specify device type with the -d option.Use smartctl -h to get a usage summary
Your output tells you exactly what’s happening:
smartctl cannot communicate directly with the disk through that USB bridge (0x0bda:0x9201, a Realtek chip). Many USB-to-SATA bridges block or mangle the ATA pass-through commands required for S.M.A.R.T. reporting.
That’s why you get:
Unknown USB bridge [0x0bda:0x9201 (0xf200)]
Please specify device type with the -d option.
What to try:
-
Force device type
Run something like:sudo smartctl -a -d sat /dev/da0-d satforcessmartctlto treat it as a SATA device behind a USB bridge.
Sometimes-d scsiworks if it’s being presented as a SCSI device. -
Probe automatically
sudo smartctl -a -d test /dev/da0That will make
smartctltry different pass-through methods and tell you which works. -
If your bridge is crippled
Many Realtek and JMicron bridges (especially cheap ones) simply do not pass S.M.A.R.T. commands. In that case, no amount ofsmartctltricks will work. Your only option is to put the drive on a proper SATA port, or use a USB enclosure/dock that supports ATA pass-through (ASMedia and some newer JMicron chips usually do).
⚠️ Bottom line: On FreeBSD ARM64 with that Realtek 0x0bda:0x9201 bridge, there’s a good chance you’ll never get S.M.A.R.T. data out of it. Test with -d sat, but if that fails, you need better hardware.
Do you want me to give you a one-liner to test all the possible -d options automatically and report back which (if any) succeed?
euler@rpi4b:~ % sudo smartctl -a -d sat /dev/da0 smartctl 7.4 2023-08-01 r5530 [FreeBSD 14.1-RELEASE arm64] (local build) Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org=== START OF INFORMATION SECTION === Device Model: YSSDJQB-2TB Serial Number: 2M22L4711400095 Firmware Version: V0718B0 User Capacity: 2,048,408,248,320 bytes [2.04 TB] Sector Size: 512 bytes logical/physical Rotation Rate: Solid State Device Form Factor: 2.5 inches TRIM Command: Available Device is: Not in smartctl database 7.3/5528 ATA Version is: ACS-2 T13/2015-D revision 3 SATA Version is: SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Sat Sep 27 12:21:22 2025 SMART support is: Available - device has SMART capability. SMART support is: Enabled=== START OF READ SMART DATA SECTION === SMART Status not supported: Incomplete response, ATA output registers missing SMART overall-health self-assessment test result: PASSED Warning: This result is based on an Attribute check.General SMART Values: Offline data collection status: (0x00) Offline data collection activitywas never started.Auto Offline Data Collection: Disabled. Self-test execution status: ( 0) The previous self-test routine completedwithout error or no self-test has everbeen run. Total time to complete Offline data collection: ( 120) seconds. Offline data collection capabilities: (0x11) SMART execute Offline immediate.No Auto Offline data collection support.Suspend Offline collection upon newcommand.No Offline surface scan supported.Self-test supported.No Conveyance Self-test supported.No Selective Self-test supported. SMART capabilities: (0x0002) Does not save SMART data beforeentering power-saving mode.Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported.General Purpose Logging supported. Short self-test routine recommended polling time: ( 2) minutes. Extended self-test routine recommended polling time: ( 10) minutes. SCT capabilities: (0x0001) SCT Status supported.SMART Attributes Data Structure revision number: 1 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE1 Raw_Read_Error_Rate 0x0032 100 100 050 Old_age Always - 05 Reallocated_Sector_Ct 0x0032 100 100 050 Old_age Always - 09 Power_On_Hours 0x0032 100 100 050 Old_age Always - 904812 Power_Cycle_Count 0x0032 100 100 050 Old_age Always - 268 160 Unknown_Attribute 0x0032 100 100 050 Old_age Always - 0 161 Unknown_Attribute 0x0033 100 100 050 Pre-fail Always - 100 163 Unknown_Attribute 0x0032 100 100 050 Old_age Always - 23 164 Unknown_Attribute 0x0032 100 100 050 Old_age Always - 32788 165 Unknown_Attribute 0x0032 100 100 050 Old_age Always - 50 166 Unknown_Attribute 0x0032 100 100 050 Old_age Always - 8 167 Unknown_Attribute 0x0032 100 100 050 Old_age Always - 44 168 Unknown_Attribute 0x0032 100 100 050 Old_age Always - 5050 169 Unknown_Attribute 0x0032 100 100 050 Old_age Always - 100 175 Program_Fail_Count_Chip 0x0032 100 100 050 Old_age Always - 0 176 Erase_Fail_Count_Chip 0x0032 100 100 050 Old_age Always - 0 177 Wear_Leveling_Count 0x0032 100 100 050 Old_age Always - 0 178 Used_Rsvd_Blk_Cnt_Chip 0x0032 100 100 050 Old_age Always - 0 181 Program_Fail_Cnt_Total 0x0032 100 100 050 Old_age Always - 0 182 Erase_Fail_Count_Total 0x0032 100 100 050 Old_age Always - 0 192 Power-Off_Retract_Count 0x0032 100 100 050 Old_age Always - 93 194 Temperature_Celsius 0x0022 100 100 050 Old_age Always - 0 195 Hardware_ECC_Recovered 0x0032 100 100 050 Old_age Always - 0 196 Reallocated_Event_Count 0x0032 100 100 050 Old_age Always - 0 197 Current_Pending_Sector 0x0032 100 100 050 Old_age Always - 0 198 Offline_Uncorrectable 0x0032 100 100 050 Old_age Always - 0 232 Available_Reservd_Space 0x0032 100 100 050 Old_age Always - 100 241 Total_LBAs_Written 0x0030 100 100 050 Old_age Offline - 446259 242 Total_LBAs_Read 0x0030 100 100 050 Old_age Offline - 363130 245 Unknown_Attribute 0x0032 100 100 050 Old_age Always - 495220SMART Error Log Version: 1 No Errors LoggedSMART Self-test log structure revision number 1 No self-tests have been logged. [To run self-tests, use: smartctl -t]Selective Self-tests/Logging not supportedThe above only provides legacy SMART information - try 'smartctl -x' for moreeuler@rpi4b:~ %
euler@rpi4b:~ % date
Sat Sep 27 12:24:32 UTC 2025