Cant get 2nd hard drive working

Hello again,

So not super long ago, I got my self a 1 TB hard drive to replace my 300 GB. Now that 1 TB is SATA, and my 300 GB is IDE. Now I got my 1 TB working as my main drive with windows, But I cant get my 300 GB IDE drive working now as a 2nd drive. (I use to use that 300 GB as my main but that wasnt big enough so I upgraded) Now the motherboard that I have is "BIOSTAR Group N61PB-M2S (Socket AM2 )" And I know what you may say, Yes its a very old motherboard. I had this computer for 5 or 6 years and this is a custom built PC. And This is running windows 10, (And yes I am a PC gamer and this is the computer I use to game on, which does really good still.)

But anyway, Please help me get this 300 GB hard drive working as the 2nd drive.
Also if you want better contact with me and we can work something out.

Thanks,
Afees98

Did you change any BIOS Settings when going from PATA to SATA. I know in some BIOS you have to set it to recognise both.