On Jul 28, 2010, at 8:23 AM, Peter Haas wrote:
Below that "line", you may include as many partitions as you wish.
All may be bootable
Above that "line", you may also include as many partitions as you
wish. None may be bootable.
On a QS 2002, or all later, every partition may be bootable.
However, on a pre-QS 2002, none after the 131,072 MB "line" may be
bootable, unless the "LBA48 property" has been added to the MacOS ROM
(using the widely available script).
In order for a partition to be bootable, it must be able to be seen
by the MacOS ROM.
It is for this reason that partitions above the "line" are NEVER
bootable if using the Intech kernel extension, because that extension
is not loaded until just before control is turned over to MacOS,
whereas partitions above the "line" are almost always bootable if
using the "LBA48 property", because that property is always resident
(it is "persistent") within the MacOS ROM.
The "LBA48 property" may be removed by executing a Cmd-Opt-P-R on pre-
QS 2002 Macs.
The "LBA48 property" may not be removed on a QS 2002 or later as it
is burned into the MacOS ROM.
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