How does windows decide if a drive is HDD or SSD ?

I have a somewhat older system with a SATA SSD drive in it and I wanted to optimize the drive.

When doing so , I saw that mediatype in file explorer properties was labeled as Hard disk drive , and it looked as if windows was actually defragmenting it rather than trimming.


So I am wondering where does windows keeps track if drives are HDD or SSD , and how can I go about to maybe correct this.

I have windows 10 pro by the way , not server edition as mentioned in the article below.


Edit:

Found this article: What To Do When Windows Identifies Disks Incorrectly


There are these PowerShell commands one can get and set the mediatype of a drive:

Get-PhysicalDisk | Select-Object FriendlyName, MediaType, Size

Click to expand...

Turns out I have Unspecified MediaType

Set-PhysicalDisk –FriendlyName "yourdiskname" -MediaType SSD ( <= OK, need to enclose the name in "quotes" when it contains spaces )

Click to expand...

I managed to rename the FriendlyName in a NewFriendlyName containing no spaces , and then I was able to set the MediaType to SSD

PS C:\Windows\system32> get-physicaldisk


Number FriendlyName SerialNumber MediaType CanPool OperationalStatus HealthStatus Usage Size

------ ------------ ------------ --------- ------- ----------------- ------------ ----- ----

0 Samsung860EVO XXXXXXXXXXXXXX SSD False OK Healthy Auto-Select 465.76 GB

5 Msft Virtual Disk Unspecified False OK Healthy Auto-Select 8 GB

Click to expand...

but the change does not persist , after reboot , windows still reports the SSD back as HDD and in powershell, get-physicaldisk MediaType reports back as unspecified.


The article mentions that the command will only work if the physical disk is a member of a storage pool, I guess in a server environment.