I currently am trying to add a few drives to my server. However, whenever I branch them, they do not appear in /dev. I checked, they are not listed in my BIOS either. Whenever I use gparted or fdisk they do not appear in devices list either, but if I branch them via a USB to sata cable, they do appear.
I formated a disk via said cable and tried to put it back in the server ; it makes an orange light, when I have a green light for the already installed drives, and no light at all for all the other drives - however it is still not detected.
I was thinking about flashing my bios and hoping for a miracle, but as there are important services on the server, I would like to try everything before doing something that could make the server unusable. I guess I could try to branch them via usb but I won't have enough ports, and the problem will remain.
For technical details, the disks are 5To Seagate Barracudas and there are 4 of them. The server is ~6 years old and runs on ubuntu 18.04. The initial drive works flawlessly.
Thank you for your time,