I have Photoshop CC 2018 on my Imac. I do many projects but recently I try to open Photoshop I get an error that the scratch disks are full. My backup is with the "Imac Macintosh HD" How do I correct this, if I need an external hard drive, will this fix the problem? By the way, I also don't understand what it does, would someone be able to explain it? Thanks in advance.
You only have 42GB free space left on your system drive. That's not much. You really should free up some space - not just for Photoshop, but for your entire system's present and future performance. A system drive should never be allowed to fill up beyond 60% or so.
Thanks for the advice, i've been through my Imac storage yesterday and everything I need is on. Should I look into getting a external hard drive, Do you have any in mind if so?