18:25, Programmingkid wrote:
I did some research with Apple's Open
Firmware implementation and found out something that might make fixing the auto partition
selection system work. What Apple's Open Firmware does when a command like "dir
hd:,\" is entered is it selects the partition that has the lowest partition number,
and displays its files.
What I did was partitioned a hard drive into three different partitions, then ran the
"dir hd:,\" command. I have verified that the lowest numbered partition is
selected by default. The other two partitions can be selected by doing this "dir
hd:10,\" and "dir hd:11,\". Is there any more information that is needed to
fix the auto selection system?
Do any of them have a system partition on?
If you mean have an operating system on them, all three partitions have Mac OS X
installed on them.
The reason I ask is that because on some of the
debug traces you've sent me, a filesystem has been identified on the Apple_Driver43_CD
partition. Therefore there must be some other logic involved with Apple's Open
Firmware in order for it to locate the partition containing the installer.
When you say the installer, I am guessing you mean the boot loader.
For CD's, there is usually one partition that has the files on it. I think a simple
algorithm for finding the right partition is to select the first partition that is of the
type APPLE_HFS or APPLE_HFSX.
Perhaps the algorithm really is that simple? For PearPC I found the
following which suggests this is exactly what they do:
I'd be interested to hear from people who have OF experience with Macs
to confirm if this is the case or not. Have you coded up a suitable
patch in OpenBIOS to test?