SOLVED Only 1/2 of my hard drive is available

[joedit]

I upgraded my gaming PC's hardware and software. I add (2) 500GB disks from a system I wasn't using anymore.
One disk was a Windows10 x32 system disk and had 4 partitions , one partition was 'Reserved'. I deleted all the partitions but when I was done I only show 298GBs instead of 465.75 like all 3 of my 500GB drives.

I used diskpart and tried clean.
Windows -10 Pro x64
Version 10.0.19042 Build 19042

The first upload is from Disk Manager and the second is from Macrium Reflect which shows the true state of the disk.
One article I read said to initialize the disk with GPT but it still shows only 1/2.

Any ideas?
Thanks!!

 

[joedit]

Man _ I am sorry - I feel like an idiot!!
Partition Disk #3, Partition #0
Model WDC WD3200AAKS-00L9A0 ATA Device it is a 320GB.

When I looked at 'System Info' I got confused. I thought it was (Model ST500DM002-1BD142 ATA Device) a 500GB device.

I apologize and thank you for your help!