7 Replies Latest reply: Aug 24, 2014 4:31 PM by Loner T
vman88 Level 1 Level 1

Hi there,

I've just bought a lovely early 2009 iMac which boots only into Windows 7. I know nothing of its history. I do not want this - I have a 10.7 disc I made ages ago. However when I try to do any of the normal things to install 10.7 I just get windows things. For example option-c brings up a "grub" command box, command-option just gives me a windows 7 option. Any ideas? Thank you


iMac, Windows 7, trying to instal 10.7
  • Loner T Level 7 Level 7
    expertise.windowssoftware
    Windows Software

    If you power cycle and hold the Option key, does it give you a menu selection with OSX?

     

    It is possible that OSX was completely removed and this was turned into a Windows only machine. Without knowing how Windows was installed, it may be tricky to partition the disk and re-install OSX.

     

    You can also put the OSX DVD in the optical drive and use Alt key to select it and check the partitioning in Disk Utility.

  • vman88 Level 1 Level 1

    Hi there. No there's no osx at all. booting while holding option goes to a windows page with windows 7 being the only option. booting with alt gives an ominous padlock sign and password box.. (no idea what that could be..). Oh dear, thought it'd be quite easy..

  • Loner T Level 7 Level 7
    expertise.windowssoftware
    Windows Software

    If you put in the OSX DVD and use Alt, do you see the DVD in boot selection?

     

    The 'padlock' sign may indicate an encrypted disk. Very strange to have the seller not wipe the machine and give you their data.

     

    If the regular firmware has been wiped and some GRUB loader firmware replaced it, you may need to contact the seller or somehow have them help you wipe the disk and set it back to a 'factory' state.

  • vman88 Level 1 Level 1

    Thanks - the seller got it from an office clearance so don't hold out much hope of getting much help that way. Is there no other way of resetting to factory state. I have 10.7 disc and original iMac grey install discs (but just can get the mac to access them using power-c). Fit a new hard drive or does the firmware override everything? Hmm

  • Loner T Level 7 Level 7
    expertise.windowssoftware
    Windows Software

    Please try the Alt key and see what happens.

     

    GRUB also allows booting from USB or Live CDs. That is an option, if you want to try those.

     

    If you can post a screen shot of the initial GRUB screen, it may be helpful to figure out other options.

     

    Please see http://www.syslinux.org/wiki/index.php/ISOLINUX

  • vman88 Level 1 Level 1

    Hey, it's ok - I managed to get past the firmware password after lots of googling - all about changing the ram and zapping the pram. Now reinstalling 10.7 happily. Then bed - late here. Thank you

  • Loner T Level 7 Level 7
    expertise.windowssoftware
    Windows Software

    It may be worth documenting how you did it, for others.