wheel hub assembly,1986 Chevy s10 with 171000 miles. Automatic with manual 4wd. Knocking/grinding noise when driving, any speed, worse when going straight.

I bought this truck for next to nothing as a project truck. I planned to fix the body because mechanically, it seemed fine. I started it this morning and started driving and hear a metal on metal grinding or dragging noise coming from around the driver front tire. Nothing is visibly broken or dragging. I don't see any fluid around the wheel. The noise is there when going straight or turning. It was loud and violent enough of a sound for me to turn around and park it. I'm looking for any advice because I've checked all I could at the time. I was unable to jack it up to inspect it be