windows 7 boot disk not visible at startup

Discussion in 'Windows, Linux & Others on the Mac' started by mmtaraval, Aug 30, 2009.

  1. mmtaraval macrumors newbie

    Joined:
    Aug 30, 2009
    #1
    Hi all, a little long winded but here goes...

    I recently installed windows 7 (7001) on a new drive (750gb) and re-formatted my old windows 7 drive (80gb) to be used as a backup for OS X. After that the windows boot drive was not available at start-up. Here is how it went:

    original set up:
    HD (os x)
    Windows drive (80gb)

    after new drive:
    HD (os x)
    windows drive (80gb and 750gb) I had windows 7 installed on both drives and at windows boot was given two choices of windows 7.

    This worked fine until I reformatted the old 80gb drive to be a second mac drive and at start-up the windows boot drive was not visible only HD (os x). The windows drive is still visible on the os x desktop (all files are visible) but not under "disk startup" in the preferences pane.

    current set-up:
    HD (os x)
    mac backup (80gb)
    windows 7 (750gb) not bootable

    I tried booting from windows 7 disk to repair but it does not recognize any bootable windows drive. Should I go through bootcamp utility to repair the windows drive?

    Any help would be appreciated greatly.
     
  2. Infrared macrumors 68000

    Infrared

    Joined:
    Mar 28, 2007
    #2
  3. mmtaraval thread starter macrumors newbie

    Joined:
    Aug 30, 2009
  4. mmtaraval thread starter macrumors newbie

    Joined:
    Aug 30, 2009
    #4
    A little over my head Infrared. I entered fdisk in terminal but I'm at a lost for how to check if the disk is active or not.
     
  5. mmtaraval thread starter macrumors newbie

    Joined:
    Aug 30, 2009
    #5
    OK, I booted from my os x dvd opened terminal ran fdisk, activated my windows partition and the windows drive is now showing but with a bootmgr missing prompt. Next step is to run the repair/recovery from the windows dvd to fix that. Thanks for the heads-up Infrared.
     
  6. Infrared macrumors 68000

    Infrared

    Joined:
    Mar 28, 2007
    #6
    Good luck!

    ps

    I suspect that bootmgr was originally on the 80GB disk before the reformat.
     

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