Startup Disk full, but partitioned drive is not

[lisadoyle123]

I have a 2012 MBP, with a pre-formatted hard drive

The partitioned hard drive says that it's got 125 free Gigs, but the start up disk says it has only 18.9 mb free.

I can't figure out how to clear that extra info on the start up...and I assume it's a problem.

I have been getting the beach ball and poor performance lately, and was about to increase the memory (from 8G to 16G), when I noticed this.

I' ve rebooted in Recovery mode and repaired one or two problems but it's still there.

screen grabs attached. thank you!!

 

[satcomer]

Clear your Internet cache on your browser (about ever 3 months) to start!

 

[Weaselboy]

The partitioned hard drive says that it's got 125 free Gigs, but the start up disk says it has only 18.9 mb free.

This is completely normal and nothing is wrong. Your main (top) volume is setup as a core storage volume and that fills the drive with the core storage image. Then that lower Macintosh HD section you selected is the actual core storage volume showing still 125GB available on the drive.

Whatever your performance issue is, it has nothing to do with this.