jborre

Thank you trurl and itimpi. That procedure worked perfectly. I followed the steps exactly: Unassigned Disk 3. Started the array so the disk was emulated. Verified the emulated disk contents looked correct. Stopped the array. Reassigned the same physical drive. Started the array again, which initiated a full rebuild onto the original drive. The rebuild completed successfully with no errors, and all of my data appears intact. In case it's helpful for anyone else, the drive itself appears healthy. SMART was clean before and after the rebuild (0 reallocated sectors, 0 pending sectors, 0 uncorrectable sectors, no CRC errors). The drive had simply become disabled for an unknown reason while installed in a TerraMaster D4-320 USB enclosure. Thanks again for your help!

Thanks! I appreciate the quick response and guidance. I’ll be able to work on the server tomorrow and will follow those steps. I’ll report back with the results.

Hi everyone, I’m looking for advice on the correct recovery procedure. My array is in a TerraMaster D4-320 USB enclosure, and Disk 3 became disabled for an unknown reason. I reseated the drive and rebooted. The drive appears to be healthy, but Unraid will not rebuild it. Current situationUnraid 7.1.4 TerraMaster D4-320 USB enclosure Correct Disk 3 is detected. Serial number matches the original assignment. SMART passes with no errors. Disk is assigned to the correct slot. Array starts normally. Disk 3 still shows: Device is disabled, contents emulated No rebuild starts automatically. I have not used New Config or formatted the disk because I don’t want to lose the ability to rebuild. SMARTSMART overall health: PASSED Important SMART attributes: Reallocated Sectors = 0 Current Pending Sectors = 0 Offline Uncorrectable = 0 UDMA CRC Errors = 0 SMART Error Log: No Errors Logged The drive appears completely healthy. Current md statusRelevant output from mdcmd status: mdState=STARTED mdNumDisabled=2 mdNumInvalid=2 diskNumber.3=3 diskState.3=4 rdevStatus.3=DISK_DSBL rdevName.3=sdc rdevId.3=WDC_WD140EDGZ-11B1PA0_9LK9DLJG rdevNumErrors.3=0 The physical drive is present and assigned correctly, but Unraid continues to emulate it instead of rebuilding it. SystemUnraid 7.1.4 Basic license Parity: 24 TB ST24000NM002H Disk 1: 8 TB WD80EFZZ Disk 2: 8 TB WD80EFZZ Disk 3: 14 TB WD140EDGZ-11B1PA0 Cache: 500 GB NVMe I’ve attached my diagnostics ZIP. Could someone advise the safest procedure to clear the disabled state and get Unraid to rebuild Disk 3? Thank you! tower-diagnostics-20260710-0931.zip