Slow Boot: New Causes

Discussion in 'Mac Pro' started by -BigMac-, Dec 11, 2011.

  1. -BigMac- macrumors 65816


    Apr 15, 2011
    Melbourne, Australia
    Hi guys,
    got the Mac Pro Quad 2010.
    Have seen threads saying boot should be about 15-30 seconds on these machines. I just did a boot test and got about 1:08 mins.
    That's a fair bit slower than 30 seconds..

    I ofcourse have done disk permissions, verify disk, set it as main startup disk etc. etc.

    HD: 1TB 7200rpm
    Free: 400Gb
    OS: 10.7.3
    RAM: 16Gb
    Misc: Apple Keyboard, Magic Mouse
    Installed: Bootcamp 7 x64

    Any help would be appreciated
  2. Neodym macrumors 68000


    Jul 5, 2002
    Did the threads reveal information about which drive is used for the reported times? On my MP1,1 with SSD as system disk i would estimate roughly 15secs from cold start to finder available.

    Adding a SSD as new system disk would be the best speedup you can do to your MP!
  3. Loa macrumors 68000


    May 5, 2003

    SSD of course would explain a lot.

    On the other hand, there are many many ways of timing your boot time. If you clock it from power button press to Finder completely available, and someone else clocks it from the boot tone to login window... well you're not comparing the same thing.

  4. xgman macrumors 601


    Aug 6, 2007
    enable admin in the root of terminal, run these commands and reboot:

    sudo kextcache -system-prelinked-kernel

    sudo kextcache -system-caches
  5. minifridge1138 macrumors 6502a

    Jun 26, 2010
    I agree, that people measure boot time differently.

    Something I've noticed with mine is that boot time seemed to increase everytime I did the following:

    1) Added RAM - which makes sense assuming it does a memory check at boot.

    2) Added a hard drive - which makes sense if the system has to look at the available drives to find the boot drive (even though i have selected a startup disk).

    3) Upgraded to Lion - I think it has to do with Lion's ability to re-launch any programs that were open when it was shutdown. Lion must save a list of all programs, files, etc, that are open to disk before it shuts off (which is why my system takes longer to shutdown now, too) and it is also going to look for that file when it boots. Let people begin to claim Lion is great.... now.

    Just as an experiment, you could pull some of your ram and see what difference it makes in boot time.
  6. matthewtoney macrumors regular


    Aug 17, 2009
    Charlotte, NC

    You don't mention what all you have plugged into various USB ports but for me, that makes a big difference (with some USB peripherals that is) - you might try the both with everything unplugged from USB that you can to see if it makes a big difference.
  7. nambuccaheadsau macrumors 65816


    Oct 19, 2007
    Nambucca Heads Australia
    For starters, go into System Preferences > Startup Disk and make sure the drive you wish to boot from is highlighted by selecting.

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