Re: Disk Images more

From: bill malcolm <wm65805_at_email.domain.hidden>
Date: Wed, 01 Aug 2001 05:20:15 -0500


Hi all: MY experience is Do NOT use an OS over 7.5 (not 8.0 not 9 ) and do not use a power Mac. I Use a LC 3 to make images for my mac128/512 and my Lisa ( I never had a problem yet). Be sure to use NEW Double sided (NOT High density discs) aks 720k, 800k disks. An SE-30 is a good choice, takes up very little room and are cheap. An Se is ok unless you use dart and then the SE is slow, due to the compression and & decompression needed for Dart as compared for disk copy 4.2 and 6.x .

bill ..

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> LisaList Digest #35
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> 1. Re: RE : Office 7/7 3.1 German
> 2. Making Lisa compatible floppies
>
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> From: Martin.Kaeser_at_email.domain.hidden
> Message-ID: <3B65F3F4.298EECB2_at_email.domain.hidden>
> Date: Tue, 31 Jul 2001 01:55:33 +0200
> Subject: Re: RE : Office 7/7 3.1 German
>
> Hello Uwe,
>
> well, yes, that ought to work.
>
> However, 400KB Macintosh disks made on an early powermac did not work
> in my 1984 Macintosh. I had to use a SE/030 and even these disks crash
> the 1984 Macintosh if i try to format them.
>
> If you manage to create working disks from the image files, i would
> like to know which software and hardware you use.
>
> Martin
>
> > From: Uwe.Krull_at_email.domain.hidden (Uwe Krull)
> > Date: Mon, 30 Jul 2001 21:19:16 +0100 (MEZ)
>
> > On Sun, 29 Jul 2001 23:07:44 +0200, Martin.Kaeser_at_email.domain.hidden wrote:
> ......
> > >Hello Uwe,
> > >
> > >how do you create images from Lisa disks and disks from images ?
> .....
> > There are serveral copyprogramms which create from these files a
> > floppydisk by copying directly to the physical disk.
> > This is what i intend to do after receiving these imagesfiles from
> > Bill.
> > These same programms do work the other way around too.
> > The only thing for Lisa needed is a MACINTOSH which can read/write Lisa
> > 3,5"floppy's and the programm to do this.
> >
> > Uwe Krull
>
> ------------------------------
>
> Message-Id: <v03007802b78c0c519640@[192.168.0.202]>
> Date: Tue, 31 Jul 2001 00:46:06 -0700
> From: James MacPhail <uo957_at_email.domain.hidden>
> Subject: Making Lisa compatible floppies
>
> >However, 400KB Macintosh disks made on an early powermac did not work
> >in my 1984 Macintosh. I had to use a SE/030 and even these disks crash
> >the 1984 Macintosh if i try to format them.
>
> Early Macs used a slighty revised floppy disk interface (the IWM -
> Integrated Wozniak Machine) was used which was smarter at synchronizing
> with the data on a floppy disk than the discrete state machine on the Lisa
> I/O board.
>
> Starting with the Mac II, the floppy disk driver software utilized this
> characteristic in formatting disks.
>
> As a result, disks made on a Mac II or later may not be readable on a Lisa
> unless using MacWorks Plus II with the PFG (Programmable Frequency
> Generator) that goes on the I/O board.
>
> Later models had the SWIM (Super Wozniak Integrated Machine) and 1.4M drive
> which does not have the variable speed ability of the 400/800k drives. The
> controller chips modified the data rate to emulate writing to the lower
> density disks. Although this works really well, I can imagine that in some
> cases, this emulation may cause compatibility problems.
>
> Hence, to make "good" 400k disks for Lisa use, I suggest you use one of the
> following:
>
> - Lisa 2
> - 128k/Original Mac
> - 512k Mac
> - Mac Plus
> - Mac SE without the superdrive upgrade
>
> I suspect that using a 400k drive instead of an 800k drive may help give
> maximum compatibility, but have not tested this.
>
> HTH,
>
> James
>
> James MacPhail "Think not of engineering as art,
> uo957_at_email.domain.hidden but of art as engineering"
> Sigma Seven Systems Ltd.
> james_at_email.domain.hidden <http://SigmaSevenSystems.com>
>
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> End of LisaList Digest #35
> **************************

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Received on 2001-08-01 03:26:40

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