2013 imac with sierra

[lasloduncan]

two full minutes plus to boot up whats up with that??

 

[redheeler]

Best advice is to switch to an SSD as your boot drive. External over Thunderbolt or USB 3 is the easiest way to do it. This should noticeably improve your boot time and general system responsiveness as well.

 

[nambuccaheadsau]

Many reasons. Failing hard drive, old computer, 21.5" iMac 2012 onwards use 2.5" 5400rpm drives and are like treacle, hard drive capacity reached are some thoughts. I will get the crystal ball out.