Slapdick

Thanks Jorge! That's what I was afraid of. We're off to a wonderful start here! Thanks again to both of you for the input and help!

Thanks so much for the reply. I shutdown, switched to a new SATA cable as well as a new cable from PSU. Ensured both ends were securely plugged in. donda-diagnostics-20260131-0656.zip

Here are the diagnostics donda-diagnostics-20260130-1740.zip

Good evening, I am attempting to set up my first array. I have a brand new Seagate Ironwolf 12tb hdd. I am getting the error "unmountable: wrong or no file system", which I have seen browsing through these forums, but most seem to be people who have already been up and running. When I do attempt to format the disk, it get either 500k, or twice I have gotten 1 million errors. The AI overlords suggested running a "smartctl" command and it returned results that it then deemed a DOA drive. I will attach those results here and also the diagnostics zip. Any help would be much appreciated in either confirming that this disk is in fact DOA, or what step that I am missing. === START OF INFORMATION SECTION === Device Model: ST12000NT001 Serial Number: ZRT2J1VE LU WWN Device Id: 5 000c50 0eafdce3e Firmware Version: EN01 User Capacity: 12,000,138,625,024 bytes [12.0 TB] Sector Size: 512 bytes logical/physical Rotation Rate: 7200 rpm Device is: Not in smartctl database 7.5/6045 ATA Version is: ATA8-ACS T13/1699-D revision 4 SATA Version is: SATA 3.0, 6.0 Gb/s Local Time is: Fri Jan 30 14:48:48 2026 PST SMART support is: Available - device has SMART capability. SMART support is: Enabled Read SMART Data failed: scsi error device not ready === START OF READ SMART DATA SECTION === SMART Status command failed: scsi error device not ready SMART overall-health self-assessment test result: UNKNOWN! SMART Status, Attributes and Thresholds cannot be read. Read SMART Log Directory failed: scsi error device not ready Read SMART Error Log failed: scsi error device not ready Read SMART Self-test Log failed: scsi error device not ready Selective Self-tests/Logging not supported The above only provides legacy SMART information - try 'smartctl -x' for more