configuration for 2 SSD/HHD drives

[bookstore1369]

I have been trying to configur my laptop but the 2nd drive will not show up in the BIOS. When i install my SSD in the M.2 slot works good and when i install the SSD Sata in its drive slot it works good. so both drives work but when I go into the BIOS it will only show 1 drive. MY disk manager shows 2 my devise manager shows 2 and file explorer shows 2. But BIOS will only show 1 Or when I start the laptop with F9 to choose which drive to boot from it only shows 1 drive

[Rainbow23]

Hi @bookstore1369,

Welcome to the HP Support Community. 

This issue might require one on one interaction over the phone to fix it.

I've sent you a private message with the steps to talk to HP Support. In order to access your private messages, click the private message icon on the upper right corner of your HP Support Community profile, next to your profile Name or simply click on this link

Take care and have a great day ahead! 

[erico]

One of the drives may not have been configured with a drive letter.

You can use Windows DiskPart to  check that and remedy that if it is the case.

[bookstore1369]

Yes both drives have letters C and D both drivers work when i install them separately. when both are installed they show up on Disk manager Device manager and file explorer but when i start the laptop with F9 only one drive is showing and when i go into the BIOS only one drive is showing.  

[erico]

Is one configured as an MBR volume and the other as a GPT volume?

You can find that out  by using Diskpart. 

Use the list disk command in diskpart.

a GPT disk will have a star in the GPT column and MBR volume will not.