5643 Views 5 Replies Latest reply: Feb 5, 2011 7:52 PM by KaiZeN DaDo
In Disk Utility use the "Partition"-Tab in the right pane.
Use Mac OS Extended (Journaled) as file system and then click on the 'Options'-Button and set the partition scheme to GPT (GUID Partition Table) for use with Intel-based Macs or APM (Apple Partition Map) for use with a PowerPC- (PPC-) based mac.
Be aware that PPC-Macs cannot boot OSX from USB-connected external harddisks !
Most likely right now the Partition Scheme of the external HD is set to MBR (Master Boot Record) which doesn't work that well with the MacOS Extended file system.
+"Most likely right now the Partition Scheme of the external HD is set to MBR (Master Boot Record) which doesn't work that well with the MacOS Extended file system."+
Yes, it was set for the *Master Boot Record*. I switched it to *GUID Partition Table*
I have a circa 2002 iMac G4 (Flat Panel), which I believe is Intel-based (I am not home at present, so I am not sure).
After formatting, I restarted the system, and the icon appeared on the desktop for the first time. It also appeared in Disk Utility, so I think we are good.
Actually, I just checked some more details of my iMac:
Machine Name: iMac
Machine Model: PowerMac4,2
CPU Type: PowerPC G4 (2.1)
Number Of CPUs: 1
CPU Speed: 800 MHz
L2 Cache (per CPU): 256 KB
Memory: 256 MB
Bus Speed: 100 MHz
Boot ROM Version: 4.3.4f2
So with a PowerMac, will I have booting problems with a USB-connected external hard drive vs. a Firewire? From what I can tell, USB moves far slower than Firewire
The USB external drives (Maxtor, Seagate) are "Speed: Up to 12 Mb/sec" while the Firewire (WD) is "Connection Speed: Up to 400 Mb/sec." That is bad...
Message was edited by: pacobell73
you shouldn't have any booting problems with the USB-connected HD.
However as said, PPC-Macs cannot boot OSX from an USB-connected HD, this only works with Firewire !
If this is your only Mac then you really should use APM (Apple Partition Map) for the external HD since this is the 'native' partition scheme for PPC-Macs.