Hard Drive Configuration

[ZeroF0X]

So I am putting a new computer with a M.2 drive as the boot drive, but obviously a large capacity M.2 would be expensive... But I looked around my apartment and realized I had a dead computer with a 1 TB hard drive and thought I could reuse the hard drive as a mass storage/holding my steam library separately from the M.2. After pulling it out, turns out its a WD Caviar Green 1 TB SATA/64MB Cache. Of course I'm gonna check the drive for any issue/wipe the drive, but the question I have is doing this a good idea?

[Oshino Shinobu]

Using SSD for boot and HDD for mass storage is really the most cost effective way of having the speed for the main system and still having a large capacity available, so yes, it's a good idea, provided nothing is wrong with the HDD.