[Help] D4-320 — 8TB WD Red Plus shows 0B / 0 logical blocks
Posted: 25 Mar 2026, 01:48
Good afternoon,
I have a new TerraMaster D4-320 enclosure and new 8TB WD Red Plus (bay 1). I have them connected to my Beelink EQi12 Mini PC running Ubuntu Server using USB 3.2.
When I turn it on the drive spins up, the bay 1 LED is active, and the enclosure enumerates correctly over USB, but the drive reports 0B / 0 logical blocks to the OS.
This is the dmesg output that Claude said would be most helpful:
sd 2:0:0:0: [sda] 0 512-byte logical blocks: (0 B/0 B)
usb 4-2.1: idVendor=174c, idProduct=235c, bcdDevice=1.00
usb 4-2.1: Product: TDAS
usb 4-2.1: Manufacturer: TerraMaster
Things I've tried
* Reseated the drive in the enclosure (I get the green light)
* Powered the enclosure on first, waited for spin-up, then connected USB
* Confirmed drive is healthy via hdparm -I /dev/sda — returns full drive info
* Updated firmware using ASM105xMPTool from forum post (viewtopic.php?t=7111) — tool appeared to flash the same version already on the device
* Tested the enclosure with an old 2TB WD Red which worked just fine.
* Plugged the enclosure into my windows machine. The disk manager showed it as an unknown drive and offered to initialize it. I tried that using the gud option but it failed immediately with a CRC error.
The issue has outlasted my patience and I would gladly take help from anyone that would be willing to take a stab at it. Thank you in advance for coming to my TerraMaster Ted Talk and have a nice day.
John
I have a new TerraMaster D4-320 enclosure and new 8TB WD Red Plus (bay 1). I have them connected to my Beelink EQi12 Mini PC running Ubuntu Server using USB 3.2.
When I turn it on the drive spins up, the bay 1 LED is active, and the enclosure enumerates correctly over USB, but the drive reports 0B / 0 logical blocks to the OS.
This is the dmesg output that Claude said would be most helpful:
sd 2:0:0:0: [sda] 0 512-byte logical blocks: (0 B/0 B)
usb 4-2.1: idVendor=174c, idProduct=235c, bcdDevice=1.00
usb 4-2.1: Product: TDAS
usb 4-2.1: Manufacturer: TerraMaster
Things I've tried
* Reseated the drive in the enclosure (I get the green light)
* Powered the enclosure on first, waited for spin-up, then connected USB
* Confirmed drive is healthy via hdparm -I /dev/sda — returns full drive info
* Updated firmware using ASM105xMPTool from forum post (viewtopic.php?t=7111) — tool appeared to flash the same version already on the device
* Tested the enclosure with an old 2TB WD Red which worked just fine.
* Plugged the enclosure into my windows machine. The disk manager showed it as an unknown drive and offered to initialize it. I tried that using the gud option but it failed immediately with a CRC error.
The issue has outlasted my patience and I would gladly take help from anyone that would be willing to take a stab at it. Thank you in advance for coming to my TerraMaster Ted Talk and have a nice day.
John