iMac incredibly slow since installing Boot Camp.

Discussion in 'Windows, Linux & Others on the Mac' started by EM87, Feb 20, 2007.

  1. EM87 macrumors regular

    Nov 8, 2006
    Brisbane, Australia
    Hi all,

    I am getting ready to install Windows XP on my iMac so as you all know, I installed Boot Camp first. This is where my problem is, since installing Boot Camp (I have not yet installed XP), my iMac is extremely slow. It's boot up time to OS X has gone from a nice and quick 18 seconds to a whopping 56 seconds. I portioned 30Gb for XP and left the remaining 130Gb for OS X if that matters. I am just wondering if this is normal for this to happen on the first few boots after installing Boot Camp, I have booted three times since, first after Boot Camp install, second after security update and third time just to see if it remained slow. Will it go back to normal soon or will it stay like this? If it stays like this I think I will just pass on XP.:(

    Has anyone else had this problem or is this not a problem at all?
  2. MRU macrumors demi-god


    Aug 23, 2005
    Yes this is common. Basically the default startup disk has become unselected and you need to re-select it.


    When you log into os X, go into system preferences

    Then go into 'startup disk' and select Macintosh HD 10.4.* as your start up disk and tick the lock changes button at the bottom.

    That will speed up your booting back to normal.
  3. CoeusTitan macrumors newbie

    Dec 5, 2006
    Resetting PRAM

    To solve your problem of slow startup, shutdown your mac.

    Turn on your mac and then immediately hold down :apple: / option / P / R

    While holding down those four keys, your mac should chime on....let it restart again and then let go of the keys AFTER the second startup chime.

    That should do it!

    I fixed the same problem on my iMac Core 2 Duo.

    Good Luck!
  4. iEatfood macrumors newbie

    Feb 27, 2007
    Thank You!!!

    I thought I was screwed after I deleted the B.C. partition (which was totally disfunctional for any internal hardware). This really worked, and was from a guy with 2 posts, compared to the one before it that really didn't solve my problem. My computer now boots even more efficiently than before installing boot camp.

    How do you know such wild disk booting startup inputs? (I thought it was going to be a joke to make my hands cramp)
  5. CoeusTitan macrumors newbie

    Dec 5, 2006

    Where did I get my knowledge of resetting PRAM? I had a problem....the same as you guys...I wanted to fix I looked for a solution. And...I found it and am now spreading the solution to anyone else who has the same issue.


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