start up is very slow

[Mobgr]

My Mac (early 2008) running El Capitain has become very slow on start up & opening up aps. Once oopen it all runs fine. I am aware of clean up stuff but simply get confused with all the options available. I have never reset back to factory settings or done a restore from Time Machine however I am aware of odd & unused stuff. Most of my data is stored on external drives & use these for Working,TM & a seperate archive drive.

 

[DaakuMaujii]

My parent's Macbook was slow, even after upgrading to more memory and SSD starting up or shutting down the Mac was horrendously slow. Resetting the PRAM actually helped (see https://support.apple.com/kb/PH18761?locale=en_GB). Although in this particular case it could have been related to the upgrade / change of hardware, but it's worth a shot.

 

[Samuelsan2001]

My Mac (early 2008) running El Capitain has become very slow on start up & opening up aps. Once oopen it all runs fine. I am aware of clean up stuff but simply get confused with all the options available. I have never reset back to factory settings or done a restore from Time Machine however I am aware of odd & unused stuff. Most of my data is stored on external drives & use these for Working,TM & a seperate archive drive.

assuming you still have the original HDD in it it is probably that slowly dying.

 

[eRondeau]

I've got a Mid-2009 Macbook Pro that also took forever between the power switch and the chime. Like 15-20 seconds. Turns out the ribbon cable to the Superdrive was loose. My guess is OS X needed all that extra time to run an additional hardware check looking for the expected Superdrive. Odd thing is, it never gave an error message about it. When I realized the Superdrive was dead I opened it up and tightened the cable and now it's working perfectly again.

 

[TheBSDGuy]

My Mac (early 2008) running El Capitain has become very slow on start up & opening up aps. Once oopen it all runs fine. I am aware of clean up stuff but simply get confused with all the options available. I have never reset back to factory settings or done a restore from Time Machine however I am aware of odd & unused stuff. Most of my data is stored on external drives & use these for Working,TM & a seperate archive drive.

You might want to go to:

http://scsc-online.com/How-To.html

and read the article on drive problems, particularly the sections on system problems and user problems.

If I have external drives connected to my system during boot, it will take almost 30 seconds longer. During boot the system has to parse the drives and the externals are often asleep, so I have to not only wait for them to spin up, then the system needs to read them.

After booted, the system kicks off an mds session to index drives and it's CPU and memory intensive, lasting often several minutes. If a new drive or drive that hasn't been connected before (or in a long time) mds may re-index the entire drive, which will definitely slow you down.

Because of age it may be, as the other poster stated, the hard drive itself, but I'd be inclined to blame El Capitan first. FYI, even with an SSD, if I have externals connected, it still slows the boot time down considerably.

 

[MacRobert10]

A lot of systems are slow with El Capitan. Watch the number of apps you have open at start up because it will definitely bottleneck the system. I can also confirm that attached external drives cause slower boots.

 

[TheBSDGuy]

Steer clear of the "cleaning" apps. They often do more harm than good, especially MacKeeper.