Adding a M.2 SSD to Optiplex 5090 MT

Question

I have a Dell Optiplex 5090 MT desktop with a default storage of 1TB HDD. I want to install a 512GB M.2 SSD. The SSD I have is an Apacer AS2280P4 512GB SSD. It is M.2 PCIe Gen 3x4. I was trying to install Windows 10 Pro but when it comes to the part where I select the drive to install Windows 10 on, the drive does not appear. This made me think the computer doesn't support it. Yet when I look in the BIOS, I can see the Apacer SSD listed in storage drives. I tested with a SP 128GB M.2 2280 SATA III SSD. The same problem is encountered. I checked if it has anything to do with security settings. No luck.

Tesla1856 · Accepted Answer

@Tigertron wrote:

I have a Dell Optiplex 5090 MT desktop

1. The SSD I have is an Apacer AS2280P4 512GB SSD. It is M.2 PCIe Gen 3x4.

2. Yet when I look in the BIOS, I can see the Apacer SSD listed in storage drives.

3. I was trying to install Windows 10 Pro but when it comes to the part where I select the drive to install Windows 10 on, the drive does not appear.

4. I tested with a SP 128GB M.2 2280 SATA III SSD. The same problem is encountered.

1. Where do yall find these strange off-brand SSDs ?

2. Good. Step one complete.

3. SSD must be completely blank. Like DiskPart-Cleaned blank. Also, it should be the only drive currently connected.

Also set BIOS as below.

4. Be sure BIOS is set to UEFI/AHCI/SecureBoot. Also, see #3 above.

Tigertron · Accepted Answer

Alright, I found the solution. BIOS was in RAID mode in default setting. I adjusted it to AHCI and I can see the drives now.

DELL-Cares · Answer

Thank you! We have received the required details. We will work towards a resolution. In the meantime, you may also receive assistance or suggestions from the community members.

Tigertron · Answer

Thank you!

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