Something to think about in regards to Apple installed SSD`s and slow "shut-down" time.
I have noticed this as well , and thought I would investigate the issue.
Have not found anything definitive , but I have my own thoughts :
Times that it shuts down immediately, > You turn your machine on , don`t open many app`s and don`t trash anything or save anything , chances are it will shutdown immediately.
Time it takes forever ( well not quite ) :
You open and use many app`s , you trash stuff , you save stuff.
The slow shut down can be caused my many things or reasons.
The most logical is:
You have used your machine in a normal fashion , { opened app`s , saved , trashed , checked mail , surfed the web and so on } . now when you shut the machine down , there is a high likelihood , that the computer is doing a Trim function.
In order to maintain proper framework and file structure , every time you save and trash , blocks of data on our SSD are getting confused , so to speak , and when you do a shutdown , the computer is rearranging the data blocks so as to be ready to perform the fast boot time that come from having an SSD.
Of course , I could be completely wrong.
Just a logical hypothesis , and of course my opinion !
Later
Gary
I have noticed this as well , and thought I would investigate the issue.
Have not found anything definitive , but I have my own thoughts :
Times that it shuts down immediately, > You turn your machine on , don`t open many app`s and don`t trash anything or save anything , chances are it will shutdown immediately.
Time it takes forever ( well not quite ) :
You open and use many app`s , you trash stuff , you save stuff.
The slow shut down can be caused my many things or reasons.
The most logical is:
You have used your machine in a normal fashion , { opened app`s , saved , trashed , checked mail , surfed the web and so on } . now when you shut the machine down , there is a high likelihood , that the computer is doing a Trim function.
In order to maintain proper framework and file structure , every time you save and trash , blocks of data on our SSD are getting confused , so to speak , and when you do a shutdown , the computer is rearranging the data blocks so as to be ready to perform the fast boot time that come from having an SSD.
Of course , I could be completely wrong.
Just a logical hypothesis , and of course my opinion !
Later
Gary