Good morning all (or whatever time of day it is in your neck of the woods), I'm hoping that I might be able to get a little help with some issues I'm having. I have a Late-2009 model iMac. It's been a really great machine and has served me well since I got it in 2010. i7, 4 gigs of ram, 1tb hard drive, upgraded to Sierra this week. Over the past few months I've noticed that it's just slowing to a drag. I mean, turn-it-on-and-make-a-sandwich-while-it-boots kind of slow. And then login-and-eat-the-sandwich-while-it-finishes-start-up slow. Safari will regularly freeze hard, loading Messages is painful, etc. It still runs the few programs I use very well (photoshop, photo mechanic, some games like Team Fortress or Civ 5) but normal system functions and web browsing are painful. I'd just chalk this up to the hard drive aging except for one thing: I have Win10 installed on a bootcamp partition and that runs substantially faster. Same drive, just different partitions. Win10 has maybe 80 gigs dedicated to it, with probably 60 free, and Sierra has the remainder of the 1TB drive, with right around 300 free. I know it's about time to replace the whole machine, but I'd like to prolong the life of it while I can. Does anyone have any ideas on why the MacOS side would run so much worse than the Win10 side of things? I know it's a vague question but I'm just looking for ideas here.