HELP: Possible problem with Snow Leopard install

Discussion in 'macOS' started by hassiman, Aug 31, 2009.

  1. hassiman macrumors member

    Aug 30, 2006
    Before installing Leopard on my new WD RE3 HD I went into Leopard (OS 10.8.11 ) disk utilities and chose PARTITION and then under advanced I chose GUID and let it do its thing.

    Now when the disks display on boot (I have both Leopard & Snow Leopard bootable disks availale) when I hold down the OPTION key the Leopard disk shows as "Leopard" but the new Snow Leopard disk displays as "EFI Boot" and I have been told it's because it was not formatted as a GUID disk.

    Would installing and booting up with Snow Leopard even be possible on a non GUID disk? The Snow Leopard drive is designated as the boot drive and it boots up just fine with no error messages...

    It's obvious that the RE3 IS GUID as when I go into disk utilities either in Leopard or Snow leopard and look at the properties of the RE3 disk containing SL it recognizes it as GUID so it must be a bug.

    It's only when I do a selective boot that I see it as "EFI Boot disk" lable

    Anyone else seen this?:confused:

    Should I start from scaratch and this time format from the Disk utility on the Snow Leopard install disk before installing the Snow Leopard OS?

    MacPro 2.66 Mac OS X (10.6) 6 GB ram.. iLife 08 Aperture / CS3 / LightZone
  2. hassiman thread starter macrumors member

    Aug 30, 2006
    Solution... 64 bit OS disks will show up as EFI

    Any 64 bit OS will show up as EFI disk whereas 32 Bit OS startup OS disks will display disk name. Per Apple support

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