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feistymama

macrumors newbie
Original poster
Jul 4, 2008
15
0
In 2016 I bought an 21.5 inch 1.6 GHz Dual-Core i5 with 8 GB RAM 21.5 inch late 2015 iMac. It has a 1TB SATA hard drive, currently 885.22 GB available of that space. I have an additional monitor attached which I need for my work.

It has run like a dream until very recently. The last couple of weeks I have had nothing but the spinning wheel of death almost constantly. Its running so slow I cant actually believe it.

Right now I am typing this from my Early 2015 MBA in my office because the iMAC won't even load a single page in Safari to allow me to use it. I usually use my iMac on an ethernet connection as stability is vitally important for my work - I work in law and all our court hearings currently in the UK are being done remotely over Teams. My other job involves trading and I need a stable and fast connection for that as numbers move very fast! My MBA is currently connected via Wi-Fi and even switching my iMac to the same network isn't helping. I turned it on 40 minutes ago, restarted it etc and still nothing.

I desperately need some help on how to fix these issues, particularly getting rid of the spinning wheel as I usually need my iMac, external monitor and my MBA every day to work. I have to use Chrome for my trading work as many of the websites I use do not function on Safari.

I updated to Big Sur on Monday and that seems to have made matters slightly worse. The ethernet/wi-fi connection issue is new since upgrading to Big Sur.
 
It has a 1tb platter-based hard drive in it, which is going to make it slow.

Platter-based hard drives are just too slow to run the most recent versions of the Mac OS -- the OS needs SSDs (which are much faster).

That's "just the way it is".
Nothing will change it.

My suggestion:
Buy a 1tb USB3 SSD.**
Format it to APFS with GUID partition format.
Install Big Sur onto it.

Then, use setup assistant (which runs at the beginning of a fresh OS install onto an empty drive).
Use setup assistant to "migrate" your apps, accounts and data from the internal HDD.
Then, go to the startup disk preference pane and set the SSD to be the boot drive.

Things should go considerably faster.

** You can also buy a "bare" 2.5" SSD -- many out there, relatively cheap.
Then get an enclosure like this:
Put the drive into the enclosure (it just snaps in).
Then format it, and you're ready to go.
 
It has a 1tb platter-based hard drive in it, which is going to make it slow.

Platter-based hard drives are just too slow to run the most recent versions of the Mac OS -- the OS needs SSDs (which are much faster).

That's "just the way it is".
Nothing will change it.

My suggestion:
Buy a 1tb USB3 SSD.**
Format it to APFS with GUID partition format.
Install Big Sur onto it.

Then, use setup assistant (which runs at the beginning of a fresh OS install onto an empty drive).
Use setup assistant to "migrate" your apps, accounts and data from the internal HDD.
Then, go to the startup disk preference pane and set the SSD to be the boot drive.

Things should go considerably faster.

** You can also buy a "bare" 2.5" SSD -- many out there, relatively cheap.
Then get an enclosure like this:
Put the drive into the enclosure (it just snaps in).
Then format it, and you're ready to go.
Thank you very much. I had thought an external SSD was the answer but wanted to be sure.
 
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