my iMac 21,5 late 2013 is slow
my IMAC is very slow. I am a non technical user
iMac 21.5″, macOS 10.15
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Perhaps the storage drive may be full of user-created clutter, to include saved documents, etc.
Too full content, can cause the system to run slower; it needs at least 30% free unused capacity
to be able to function. The spin-rate of the HDD is also cause of mechanical slowness.
Also some of these may have a 'two-in-one storage drive' comprised of a small SSD and larger
HDD. Usually seen by the Mac OS as one, sometimes that gets 'broken' & then two are seen as
separate desktop icons and in the file systems, too.
• How to fix a split Fusion Drive - Apple Support
/support.apple.com/en-us/HT207584
"These steps permanently delete all data stored on the drives that make up
your Fusion Drive. Make sure that you have a backup before continuing."
This duality ^ is referred to as a 'Fusion' Drive.
//discussions.apple.com/docs/DOC-250000211
To show other users who may have some ideas what your Mac is doing; you may get and
use a free running utility called EtreCheck; this allows one to post the generated report in
your Apple communities discussion. ~ Instructions make use of a Text feature, so it all fits.
• How to use Safe mode on your Mac - Apple Support
//support.apple.com/en-us/HT201262
Had you tried to restart in Safe mode? Sometimes temporary file glitches
can be resolved from this; in its simplist form; start in Safe mode, let it run;
and then about 20+ minutes later, restart; then it can exit Safe mode.