> First, your DA G4 doesn't support volumes bigger than 128 GB.

My shop had four G4 DAs, and all supported > 128 GB (actual capacity is
131,072).

You may use HD Speedtools, but that is an extension, and is only available
after booting has been successfully completed.

You may use the Open Firmware hack, and that is available at all times as
it is "persistently" added to the boot ROM.

Lookup the O.F. hack in the usual places, and you will probably find
several versions of it, at least one of which will get the job done.

I say "persistent", as the code required to support > 128 GB [ * ] is
actually added to the writable portion of the boot ROM.

It is deleted whenever you do an O.F. reset (and which erases any such
additions to O.F.).

With the MDD machines, the > 128 GB code was permanently in the boot ROM,
and cannot be deleted.


[ * ] Drives which are <= 128 GB send a single parameter block to the
drive. Drives which are > 128 GB send two parameter blocks, the first of
which has the low-order block IDs, and the second of which has the
high-order block IDs.

The O.F. hack enables sending the second parameter block for those cases
where two parameter blocks are expected. The ROM is actually capable of
sending the second parameter block, but it is inhibited from doing so on
DAs and earlier models.

Without the O.F. hack, only one parameter block is sent, irrespective of
the capacity of the drive, and which can lead to some rather strange
results as the block ID which the drive sees is really the "MOD 131072"
function applied to the actual block ID.





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