Question I have a problem with my computer's storage SSD ?

[NineCore99]

I have a PC with 512GB SSD storage and a 1TB HDD. About a few months later, I noticed that my HDD had bad sectors, so I backed it up and removed it from my PC. I put a 240GB SSD instead of the bad HDD and the PC worked OK, but I don't know why it doesn't see my SSD, except the one with Windows on it ?

What could be the problem?