FanXIANG S660 4TB M.2

Yeah, I managed to get their SSD Software, but still...

Check in BIOS

Reboot and enter BIOS (usually by pressing DEL, F2, or ESC).

See if the drive is detected at all at the hardware level.

If it’s not listed, the issue is likely hardware failure or loose connection.

So sorry to hear that, If Ubuntu doesn’t see it at all, even as an unmounted device, it may not be getting power or has a hardware failure.

I tried all I could, but no luck... especially with UBUNTU; not work. I'll check-on the BIOS next, but there is a case where it'll just outright freeze...

I THINK it listed itself as DRIVE: F. But I cannot get it to work with chkdsk and the other commands either. On Ubuntu, it just listed only my KINGSTON 4TB OS Drive.

Dang... I never knew how hard this was going to be to fix...

Hey there! My name is Jason one of your Team here in Microsoft Community Just like you i am also helping our Community by sharing thoughts and ideas. So If your Fanxiang S660 4TB M.2 NVMe SSD previously functioned but now is "soft-bricked" (not recognized or failing), it's possible that it can be recovered, depending on the behavior. Let's step through diagnosis and possible recovery techniques.

Confirm the Symptoms

First, what exactly is happening?

Please check:

Correct : Is it visible in BIOS/UEFI?

Correct : Is it visible in Disk Management or Device Manager in Windows?

Wrong : Does it freeze your system if connected?

Wrong : Does it show up as "Unknown Device" or not at all?

Wrong : Can it be seen from Linux live USB?

Let me know these details — but in the meantime, here’s what to try:

Check with Linux or WinPE

Sometimes Windows won't initialize a bricked or partially corrupt NVMe drive.

Boot from a Linux Live USB (like Ubuntu)

Open GParted or run:

sudo lsblk

sudo dmesg | grep nvme

If Linux sees it but Windows doesn't, it may be a file system or driver corruption

Firmware, Secure Erase, or Low-Level Tools

Option A: Check for Firmware Tools

Fanxiang is a newer Chinese brand and doesn’t always provide firmware tools, but:

Go to Fanxiang official website

Look for a firmware update tool or SSD toolbox

If there's none for the S660, skip to Option B

Option B: Use Third-Party Low-Level Tools

Use tools that can interact with the drive even if the OS can't:

Tools to try:

CrystalDiskInfo (see if it's detected at all)

HDD LLF Low-Level Format Tool (for "zeroing out" dead partitions)

HDAT2 – Bootable low-level diagnostic

Victoria SSD Tool (advanced diagnostics, sometimes recovers "dead" sectors)

Parted Magic – Paid tool with SSD Secure Erase features (useful for soft-bricked NVMe)

⚠️️ Caution: Secure erase will wipe the SSD entirely.

Hope that will help

best regards

Jason