Drives not seeing UHD discs in new PC

[andcbii]

I have the following to WH16NS40 drives.

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Drive Information
OS device name: D:
Manufacturer: HL-DT-ST
Product: BD-RE WH16NS40
Revision: 1.02
Serial number: K9HE59F3848
Firmware date: 2114-05-07 10:26
Bus encryption flags: 17
Highest AACS version: 76

LibreDrive Information
Status: Enabled
Drive platform: MT1939
Firmware type: Original (unpatched)
Firmware version: 1.02
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Partial
Unrestricted read speed: Yes

and

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Drive Information
OS device name: F:
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE WH16NS40
Revision: 1.02
Serial number: K9KE59F3902
Firmware date: 2114-05-07 10:26
Bus encryption flags: 17
Highest AACS version: 76

LibreDrive Information
Status: Enabled
Drive platform: MT1939
Firmware type: Original (unpatched)
Firmware version: 1.02
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Partial
Unrestricted read speed: Yes

These drives worked fine in my old PC. I've since moved them to a new PC (now a VM) and they aren't able to see UHD discs. They rip DVDs and blu-rays just fine. I've got a 3rd drive BU40N on the VM working just fine. Any idea why these don't aren't able to see the UHD discs?

[d00zah]

Neither of these drives support UHD. HW is too old.

Firmware date: 2114-05-07 10:26 (date is year +100... pre-2015)
Drive platform: MT1939

Firmware date: 2114-05-07 10:26 (date is year +100... pre-2015)
Drive platform: MT1939

UHD required Drive platform: MT1959 entered production in ~Oct 2015.

Both drives are already enabled to do everything they are capable of.

The Guide explains all this.

[andcbii]

Yup.... I definitely put the wrong drives in my new server. This is what I get for keeping a bunch of old drives around. I swapped the drives with the ones what were actually in my old PC and everything is working.

[d00zah]

Yup.... I definitely put the wrong drives in my new server. This is what I get for keeping a bunch of old drives around. I swapped the drives with the ones what were actually in my old PC and everything is working.

I have a few myself & it doesn't help that there are 2 HW versions w/ the same model number.

[Billycar11]

Also vm complicates things for libre drive if the drive is not fully passed through.