new MBP Wont boot up when External HD connected

Discussion in 'Mac Basics and Help' started by tim1980, Nov 4, 2008.

  1. tim1980 macrumors newbie

    Oct 20, 2008
    I have the new MB pro (first time mac buyer). When I plug in my 500GB lacie HD via firewire 800, the mac will NOT boot up to OSX on the mac HD. Instead I get the flashing folder with a question mark. When I unplug the external HD the mac boots up just fine to OSX on the mac HD.

    Once my mac is booted up, I am able to plug in the external HD and it is recognized and I can use the HD like normal. My HD is formatted for Mac.

    How can I get it so if my external HD is plugged in it will boot up (without a flashing folder) to the OSX on my mac HD?????? Thanks.
  2. chscag macrumors 68030


    Feb 17, 2008
    Fort Worth, Texas
    Does your LaCie HD also have a USB 2.0 port? Use that instead. When your external HD is connected to the MBP via FW800, it assumes it's bootable. Since it's not bootable, you get the flashing folder with the ?.

    You should also be able to boot the MBP with the LaCie connected to the FW800 port while holding down the Option key during boot up. Just select the Macintosh HD.

  3. tim1980 thread starter macrumors newbie

    Oct 20, 2008
    thanks for the note... yes it does have USB, however my 2 USB are currently in use (printer and mouse)

    Is there a way to program the computer to not try to boot up to the external HD when it is connected via FW800? Having to hold down the Option Key every time is kinda annoying...

Share This Page