On Fri, 11 Aug 2000, Bob Nestor wrote:

> If you're talking about the same field I think you are there are some 
> additional values that Apple is also using.  0x701, 0xffff, and 0xf8ff.  
> The original value of 0x0001 meant to try to load/boot from a non-chained 
> SCSI driver; the complement (0xffff) is reserved for the chained variant 
> of the driver.  The 0x701 is the non-chained driver for the IDE, and the 
> 0xf8ff is the chained variant of the IDE driver.  This is documented, 
> although not very well, in some of the new Tech Notes.

For clarity, I'm talking about the ddType field in the Block0
structure. It's on page 3-23 of my copy of Inside Mac: devices, and on
page 557 of IM:V. Interestingly enough, they both say that you can use the
Start Manager's SetOSDefault value to choose which one gets loaded...

The real question is if OF cares about these values. :-) For macppc, I
don't think we'll ever need to use the Start Manager to get booted.

Take care,

Bill