10.4.8 external HD wont boot in 10.5.6

Discussion in 'Mac Basics and Help' started by TSRP, Dec 16, 2009.

  1. TSRP macrumors newbie

    Dec 16, 2009
    Hello there, I am not sure If any one can shed any light on this, I have an Intel MacBook running 10.4.8 there are music plug ins that I use in logic 7.2. I have not used it for many many months now, how ever now I have some time I would like to get some stuff done. When I bought my new iMac which is running 10.5.6 I was told I would be able to make a bootable copy of my MacBook plug it in through firewire/usb and use it on my new iMac. But when I try to start up from my bootable copy my MacBook just restarts like a loop all the time! can anyone shed any light? I would not have worried about it before but the plug ins I have will not work on anything newer than 10.4.11 (even running Under rosetta)
  2. Cave Man macrumors 604

    Cave Man

    Feb 12, 2007
    Neander Valley, Germany; just outside Duesseldorf
    Did you initialize the external drive with a GUID partition table? If not, it won't boot an Intel Mac. When you turn on the computer, do you hold the Option key to get bootable volumes?
  3. PeggyD macrumors 6502a

    Jan 9, 2007
    Covington, WA, USA
  4. Dave Braine macrumors 68040

    Dave Braine

    Mar 19, 2008
    Warrington, UK
    Not so. A PPC Mac won't boot from a GUID partitioned ext HD but Intel Macs will boot from an APM partitioned HD. I have one PPC and two Intel Macs, so my external drive is partitioned using APM and both Intels boot fine.

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