What Is M.2 SSD?
The M.2 SSD is one bang out of Solid-State drive (SSD).
To be specific, it is a small form factor SSD that internally mounted storage expansion cards use.

It is smaller than other kinds of SSDs like the miniserial Advanced Technology Attachment (mSATA).
Why is my M.2 SSD not showing in BIOS?
Why is my M.2 SSD not detected in Disk Management or File Explorer?
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Recover Data from an M.2 SSD That Is Not Showing up on PC?
What if the M.2 SSD is not showing up on a PC?
You must want to fix the problem and make it work for you.

Here is how to recover data from an M.2 SSD that is not showing up on your PC.
Step 1: Download and install MiniTool Power Data Recovery Free Edition on your machine.
Then, launch it to enter its main interface.

This software will display all drives it can detect underLogical Drives.
Step 2: look to see if it’s possible for you to see the problematic SSD.
If you might see it, you will be able to use this software to rescue files from it.

Then, hover over that SSD and click theScanbutton to start scanning the drive.
Step 3: The whole scanning process will last for some minutes.
You should wait patiently until the process ends.

Then, you’re able to see the scanned files including both existing and deleted files.
Usually, these scanned files are categorized by three paths:Deleted Files,Lost Files, andExisting Files.
you could open each path to find the files you want to recover.

You should not save the selected files to the original location.
However, if you want to recover more files, you will need to upgrade to an advanced edition.
MiniTool Software supplies different editions for personal users and business users.

If you are a personal user, thePersonal Ultimate editioncan fully meet your needs.
We collect some easy methods and show them as follows.
But unfortunately, you only find that the M.2 drive is not showing up in BIOS.
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How to turn on the drive port?
you better boot your setup into BIOS and then go toDrives.
Then, you should verify that all drive ports are enabled.
How to turn on the CSM option?
Or you might turn on the CSM option to make the M.2 SSD to be detected.
Otherwise, the M.2 drive will not be successfully detected.
you might unplug the M.2 SSD and then plug it in again.
you gotta confirm the SSD is firmly inserted into the M.2 slot.
Before that, you might see the M.2 drive in Disk Management but not in File Explorer.
Step 2: ExpandDisk drives, then right-grab the SSD drive.
How to add a drive letter in Disk Management?
Step 1: PressWindows + Xand then selectDisk Managementfrom the WinX menu.
Step 3: Click theAddbutton on the next page.
Step 4: Select a drive letter for the M.2 drive.
Step 5: ClickOKto save the change.
Now, the SSD has a drive letter.
You should be able to see the drive in File Explorer.
How to add a drive letter using MiniTool Partition Wizard?
Step 1: Download and install MiniTool Partition Wizard on your Windows computer.
Step 2: bring up the software to enter its main interface.
Step 3: Right-hit the partition on the SSD and selectChange Letter.
Step 4: Select a letter for it.
Step 5: ClickOKto continue.
Step 6: ClickApplyon the bottom-left corner to make the operation take effect.
Now, you should see the M,2 SSD in File Explorer or in BIOS.
Besides, the SSD also should have a drive letter to run this command.
Step 2: Right-click Command Prompt and selectRun as administrator.
This is to run Command Prompt as administrator.
Step 3: Typechkdsk /*: /f /rinto Command Prompt and pressEnter.
Wait until the process ends.
After that, it’s possible for you to close Command Prompt and see if the issue is solved.
Formatting an SSD will remove all files on the SSD.
Step 1: Right-click theStartbutton (the Windows icon in the taskbar) and selectDisk Managementto open it.
Step 2: Right-snag the target drive and selectFormat.
Step 3: Select a file system and drive label for the SSD if necessary.
Step 4: DeselectQuick Formatif necessary.
Step 5: ClickYesto start formatting the drive.
We hope you’re able to find a suitable method for you.