Help ! Classic Mac Pro won't boot from my USB stick SL installation

Discussion in 'Mac Pro' started by Thezine, Aug 28, 2009.

  1. Thezine macrumors newbie

    Joined:
    Jul 11, 2009
    #1
    Hello Everyone,

    I really need help.

    I have a classic mac pro and I restored Snow Leopard on my 8gb usb stick.
    The stick is recognized on osx and works very well and when the installation process reboots, nothing happens, the usb stick is not recognized on startup, even with the alt command.
    I tried on other machines and everything is going perfectly except with my mac pro.

    Can you plz guys tell me how can I make my mac pro (classic) recognize my usb stick on startup ?

    Thank you very much for your help.
     
  2. nightfly13 macrumors 6502a

    nightfly13

    Joined:
    Jul 17, 2008
    Location:
    Ranchi, India
    #2
    Which USB port did you try? The front ones?

    I know it's crazy, but I have a hazy recollection of having this issue once years ago (no boot from flash drive) and it worked from the rear port.
     
  3. Thezine thread starter macrumors newbie

    Joined:
    Jul 11, 2009
    #3
    Thank you for your answer,

    I started with the front ones and it didn't work ...

    then I tried with a rear one , and it didn't work as well :(

    Is it possible that the mac pro just don't boot up from an usb stick ?

    I tried the usb stick with 2 Mac notebooks and it's working perfectly and the stick is recognized on startup.

    Really need help on this one ...
     
  4. creon macrumors 6502

    Joined:
    Mar 19, 2009
    #4
    You tried this before the the Mods caught you. Don't let them ban you.
     
  5. kockgunner macrumors 68000

    kockgunner

    Joined:
    Sep 24, 2007
    Location:
    Vancouver, Canada
    #5
    What's going on?
     
  6. Thezine thread starter macrumors newbie

    Joined:
    Jul 11, 2009
    #6
    ????
     
  7. product26 macrumors 6502a

    product26

    Joined:
    May 30, 2005
    #7
    did someone make a joke 'bout sticking it in the rear?
     
  8. Thezine thread starter macrumors newbie

    Joined:
    Jul 11, 2009
    #8
    Didn't think about that one .... ; )

    Any help is appreciated.

    Thank you.
     
  9. product26 macrumors 6502a

    product26

    Joined:
    May 30, 2005
    #9
    I remember looking up instructions on how to flash a video card for my mac pro 1,1 and reading that the mac pro did not support booting from a usb flash drive... My only option was to boot from a CD.

    I could be wrong... so don't quote me.
     
  10. JPamplin macrumors 6502

    JPamplin

    Joined:
    Mar 12, 2009
    Location:
    Nashville, TN
    #10
    I just reinstalled 10.6 from an 8GB USB stick restored from a DMG of the install DVD. It is in the front top USB port.

    I have a MacPro1,1, reformatted the USB as an 8GB Apple File System volume with GUID, restored the image onto it, held Option at boot to select the USB drive, and ran the installer. No issues whatsoever.

    Try starting over.

    JP
     
  11. product26 macrumors 6502a

    product26

    Joined:
    May 30, 2005
    #11
    AHH yes! that is it! it must be GUID! The problems I ran in to were that it would not boot a USB stick partitioned with MBR.

     

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