4 Replies Latest reply: Nov 30, 2012 9:58 AM by Limnos
Trygve Larsen Level 1 (5 points)

Can disc utility create multiple partitions on an external firewire drive using a GUID map on one partition and the Apple map on the other two partitions?

I tried. After cloning  my internal drive to the Apple mapped partition I tried an option key reboot and the three partitions never appeared, even though they were on the desktop. Changing startup drive  in system system preferences to one of these partitions resulted in a blank screen. Had to power down and reboot.

I've successfully made a multiple partitian backup drive (same make and model), but all with the Apple mapping scheme.

Any thoughts. Thanks in advance.


iBook G4, Mac OS X (10.4.7)
  • Kappy Level 10 (266,046 points)

    No. You can only use one partition map at a time. Why do you need partitions using APM rather than GUID? What do you want to accomplish? You have an iBook G4, so you can only use APM.

  • Trygve Larsen Level 1 (5 points)

    Since the backup drive had enough capacity, I had hoped to use it to backup two older machines that have software running on OS 9.2.2 from defunct suppliers. Canvas (OS X), won't run on Intel machines and MECA's Managing your Money still has some desirable features not available on Quicken. Other software which is 9.2 dependent is not used enough to warrant the additional expense to upgrade to OS X.

    I do, however, have the other machines backed up to a different external drive. I was just hoping to consolidate them all together.

  • Kappy Level 10 (266,046 points)

    If you partition using APM, then you cannnot install a version of OS X that requires GUID, but you can still use the drive to backup an already installed version of OS X.

  • Limnos Level 8 (47,381 points)

    You would need to include an exact description of those other machines in your question.  So far you have only mentioned a G4 and OS9 software, all of which only needs APM and won't work with GUID.  Intel Macs are the ones using GUID but there are some workarounds if you must use an older drive with both generations of Macs.