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Amiga Collections: New Zealand Amiga Users Group
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New Zealand Amiga Users Group Newsdisk v27 (1989-12)(NZAmigaUG).zip
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ZapDH0
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zapdh0.doc
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1993-12-03
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ZAPdh0
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By John Davis, October 1989
What it does
All you 2090 owners .... ever get _really_ annoyed with that forced
OldFileSystem Dh0 partition. It's bad enough that you hvae to waste 400k
of disk space with the OFS partition, but what is really inconvenient is
that you can't cancel the device ( assign dh0: remove sends you off to
meet the guru ), and therefore means you can't assign DH0: to be the FFS
partition.
This in turn means that all those _nice_ programs with install programs
that want to install to DH0, or those equally _nice_ programs that give you
file requester gadgets for DH0 aren't much fun at all ( okay ... call me
lazy, but newzapping three zillion programs so as DH0->FH0 is not my idea
of fun ... at this point I should say a big thank you to all _real_
programmers whose filereq's know what the _current_ dir is, and start there)
Well this program is just for you. What it does is munge it's way through
the DOS device list, looking for that 'orrible DH0 node . When it finds
it, it alters the DeviceNodeName so as it's name is now ZH0. You are then
free to assign DH0: onto your real main partition.
Usage
Pretty simple really, just chuck ZAPDh0 somewhere in your startup-sequence.
It is _probably_ safer if you do it once you've assigned everything over to
the FFS partition, but it seems that it's pretty safe to put just about
anywhere ( as any existing dos locks to dh0:blah will still point to the
_old_ DH0: ... it's just any new references that will get the assigned
DH0 ).
eg .. in your startup-sequence
ZAPDh0
assign DH0: fh0:
From now on all references to DH0: will refer to FH0:. If you want to
acces the OFS partition, you still can ( unlike if you use assigndev ),
it's just now called ZH0: ( or you can still access it via workbench )
Warning
This program is what CBM tech support would probably describe as 'wildly
illegal' ... I access structures I've got no right to. As such I cannot
guarantee it will work on any given setup, nor that it will work in future
releases of the OS. I have tested it on 2000's with 2090's, and on my own
C-Ltd drive.
Licence Agreement
There is none !! It's absolutely 100% Public Domain.
If this program makes you happy, and makes your life a little easier,
that's good. If you feel obliged to thank me, then that's alright, I
always enjoy getting letters from fellow amiga users. If it makes you
unhappy ( i.e. it's got some bug I haven't found ), then also write to me.
My contact adress is .....
John Davis
31 Clarence St
Christchurch 2
New Zealand