Lion USB bootable not showing as option in startup manager

Discussion in 'MacBook Pro' started by energizedmortal, Mar 12, 2013.

  1. energizedmortal macrumors newbie

    Joined:
    Mar 12, 2013
    #1
    Macbook pro 15 inch 3.1 early 2008

    Does not show Lion USB bootable flashdrive as option in startup manager (but does show up at startup disk).

    Goal: clean Lion os install on one primary partition. DVD drive does not read Lion DVD I burned. I do not have self powered external hard drive.

    So far the only way I was able to install OS X Lion was to partition hard drive into 2, 1 partition for Lion install, 2nd partion to restore the USB Install ESD to in Lion recovery disk utility which does show up as an option in startup manager once on hard disk.

    However, I want to boot directly from USB so I can wipe both partitions and have one hard disk partition and perform clean install.

    Things I have done to 8 gb USB:
    made guid partition table
    formatted USB mac os x extended journaled
    did restore of Lion Mac OS X Install ESD
    Note: rEIFt does show a bootable 4gb usb windows 7 option but not the 8gb lion install usb.

    Any suggestions?
     
  2. energizedmortal thread starter macrumors newbie

    Joined:
    Mar 12, 2013
    #3
  3. Orlandoech macrumors 68040

    Orlandoech

    Joined:
    Jun 2, 2011
    Location:
    Salt Lake City, UT
    #4
    And its Partitioned as a OS X Journeled? Not Fat,ExFat,NTFS, etc.?
     
  4. energizedmortal thread starter macrumors newbie

    Joined:
    Mar 12, 2013
    #5
    ^ Correct.

    If I choose it from startup disk , it starts up normal and does not initiate setup.
     
  5. Orlandoech macrumors 68040

    Orlandoech

    Joined:
    Jun 2, 2011
    Location:
    Salt Lake City, UT
    #6
    Very odd. What if you select it as a start-up disk from sys-prefs then reboot? same thing?
     
  6. energizedmortal, Mar 12, 2013
    Last edited: Mar 12, 2013

    energizedmortal thread starter macrumors newbie

    Joined:
    Mar 12, 2013
    #7
    same thing

    it actually will boot into setup that i copied onto hard drive as opposed to USB setup.

    im going to try sata to usb with external 2.5 hard drive. If not may have to go with external dvd rom.
     
  7. minifridge1138 macrumors 6502a

    Joined:
    Jun 26, 2010
    #8
    What options do you see if you hold the 'option' key as the computer boots?
     
  8. energizedmortal thread starter macrumors newbie

    Joined:
    Mar 12, 2013
    #9
    At the moment I see Recovery HD , normal HD, and Mac OS X install hd when pressing alt/option which are all the one internal hard drive I have.
     
  9. energizedmortal thread starter macrumors newbie

    Joined:
    Mar 12, 2013
    #10
    Resolved

    Powered external drive worked. So beware some macbook pro 3.1 core 2 duo are capable of NOT booting from a bus powered thumb drive.
     

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