[SOLVED] Cannot Find 2nd SSD in Disk Management or Device Manager - HELP!

[Ed5]

I already have a Samsung SSD 850 EVO 250GB installed. I tried to install a second SSD, the same model Samsung SSD 850 EVO 250GB, but I cannot allocate the data in disk management because it doesn't show up. I only see disk 0 which is my C drive with the OS. I can see both ssd's in BIOS too. Any Ideas?

 

[drtweak]

Motherboard make and model?

 

[popatim]

I'm betting the newer 850 is used and your UEFI bios has detected another Windows had been on it and blocked the drive.

Use diskpart's clean command on it but be absolutely sure you select the right drive.
https://www.seagate.com/support/kb/...-a-drive-through-the-command-prompt-005929en/