Re: HFS question

[dempson@actrix.gen.nz (David Empson)]

schmidtd <schmidtd@my-deja.com> wrote:

> On Dec 9, 1:22 am, mojoehand <jg...@zianet.com> wrote:
> > On Dec 8, 10:15 pm, "a2retro" <a2re...@a2central.com.remove-11py-this>
> > wrote:
> > > mojoehand wrote:
> > > > If GS/OS will read/write an HFS volume, is there any reason that I
> > > > couldn't have one ProDOS boot partition and the rest of a disk as HFS
> > > > for use by the GS? In other words, will ProDOS programs and data files
> > > > run ok from an HFS partition, once I've booted from a ProDOS partion?
> > > > This would solve the annoyance of having several 32MB partitions.
> >
> > > There is no HFS driver for ProDOS 8. So if you boot ProDOS 8 from that
> > > partition, you will only see the 32MB partition. If you install and run
> > > GS/OS on that ProDOS 8 partation then you will see both the ProDOS 8
> > > partition and the HFS partition provided you install the HFS FST during
> > > the GS/OS install.
> >
> > > If you boot back to ProDOS 8 application while in GS/OS then you will
> > > not see the HFS partition.
> >
> > > At least that is the way I understand things to be.
> >
> > So, running a ProDOS app from GS/OS won't work then?
> Well, you can _launch_ a ProDOS 8 app from GS/OS, and it will run just
> fine (after booting itself a little ProDOS 8 OS).  But it won't see
> the HFS partition.

No, it won't work at all. GS/OS will probably launch ProDOS-8, passing
it the path to the P8 application which is on the HFS volume, but P8
will be unable to find that volume so the application launch will fail
with an error message from ProDOS-8, or it might automatically quit back
to GS/OS again.

If GS/OS is smart enough to realise this, it will refuse to launch
ProDOS-8 at all in this situation.

Only native GS/OS applications can be launched from (or access files on)
an HFS volume.

-- 
David Empson
dempson@actrix.gen.nz